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Microsoft Update Intelligence

Administrator notices from Microsoft, summarised: what changed, and what you should do.

Latest Weekly DigestOct 19 – Oct 25, 20264 service updates · 1 security advisory →
0Action Required 270Review Recommended

Last updated Oct 30, 2026 6:10 AM EDT

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CVE-2026-65796: Windows iSCSI Target Service Remote Code Execution Vulnerability

Windows iSCSI Target Service Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Unlikely. Microsoft publishes a customer-installable fix (KB5120238, KB5120242, KB5120229 and 5 more).

Severity Critical Exploited No Disclosed No Affects Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems (+14 more) Fix KB5120238, KB5120242, KB5120229 and 5 more

What you should do

If you run the affected products, install Microsoft's update (KB5120238, KB5120242, KB5120229 and 5 more); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Details

Original Microsoft text

Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.

Severity
Critical · CVSS 8.1
Type
Security updates
Tags
Windows iSCSI Target Service, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Unlikely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-65791: Windows iSCSI Target Service Remote Code Execution Vulnerability

Windows iSCSI Target Service Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Unlikely. Microsoft publishes a customer-installable fix (KB5120238, KB5120242, KB5120229 and 5 more).

Severity Critical Exploited No Disclosed No Affects Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems (+14 more) Fix KB5120238, KB5120242, KB5120229 and 5 more

What you should do

If you run the affected products, install Microsoft's update (KB5120238, KB5120242, KB5120229 and 5 more); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Details

Original Microsoft text

Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.

Severity
Critical · CVSS 9.8
Type
Security updates
Tags
Windows iSCSI Target Service, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Unlikely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-65789: Windows DNS Server Remote Code Execution Vulnerability

Windows DNS Server Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Unlikely. Microsoft publishes a customer-installable fix (KB5120238, KB5120242, KB5120229 and 3 more).

Severity Critical Exploited No Disclosed No Affects Windows Server 2016, Windows Server 2016 (Server Core installation) (+6 more) Fix KB5120238, KB5120242, KB5120229 and 3 more

What you should do

If you run the affected products, install Microsoft's update (KB5120238, KB5120242, KB5120229 and 3 more); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Details

Original Microsoft text

Use after free in Windows DNS allows an unauthorized attacker to execute code over a network.

Severity
Critical · CVSS 8.1
Type
Security updates
Tags
Windows DNS, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Unlikely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-65775: Windows Win32k Elevation of Privilege Vulnerability

Windows Win32k Elevation of Privilege Vulnerability. Microsoft gives no severity rating; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation More Likely. Microsoft marks customer action as required but lists no specific update or mitigation in the advisory data.

Severity not rated Exploited No Disclosed No Affects not listed Fix none listed

What you should do

Open the advisory to see which of your products are affected; Microsoft lists no specific update here. from Microsoft's advisory data

Why: Microsoft marks customer action as required but lists no specific update, so check whether your products are affected.

Details

Original Microsoft text

Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.

Type
Security updates
Tags
Windows Win32K, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation More Likely · Remediation: none listed
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (n/a) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-65679: Windows iSCSI Target Service Remote Code Execution Vulnerability

Windows iSCSI Target Service Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (KB5120238, KB5120242, KB5120229 and 5 more).

Severity Critical Exploited No Disclosed No Affects Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems (+14 more) Fix KB5120238, KB5120242, KB5120229 and 5 more

What you should do

If you run the affected products, install Microsoft's update (KB5120238, KB5120242, KB5120229 and 5 more); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Details

Original Microsoft text

Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.

Severity
Critical · CVSS 8.1
Type
Security updates
Tags
Windows iSCSI Target Service, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-65665: Microsoft SharePoint Server Remote Code Execution Vulnerability

Microsoft SharePoint Server Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation More Likely. Microsoft publishes a customer-installable fix (KB5002894, KB5002896, KB5002893).

Severity Critical Exploited No Disclosed No Affects Microsoft SharePoint Server 2019, Microsoft SharePoint Server Subscription Edition Fix KB5002894, KB5002896, KB5002893

What you should do

If you run the affected products, install Microsoft's update (KB5002894, KB5002896, KB5002893); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Severity
Critical · CVSS 8.8
Type
Security updates
Services
SharePoint
Tags
Microsoft Office SharePoint, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation More Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-65664: Microsoft Office Graphics Component Remote Code Execution Vulnerability

Microsoft Office Graphics Component Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (see the release notes linked in the advisory).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+9 more) Fix see release notes

What you should do

If you run the affected products, install Microsoft's update (see the release notes linked in the advisory); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Tags
Microsoft Office, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-65657: Microsoft Office Remote Code Execution Vulnerability

Microsoft Office Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (see the release notes linked in the advisory).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+9 more) Fix see release notes

What you should do

If you run the affected products, install Microsoft's update (see the release notes linked in the advisory); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Tags
Microsoft Office, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-64921: Microsoft SharePoint Server Elevation of Privilege Vulnerability

Microsoft SharePoint Server Elevation of Privilege Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (KB5002905, KB5002906, KB5002894 and 2 more).

Severity Critical Exploited No Disclosed No Affects Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019 (+1 more) Fix KB5002905, KB5002906, KB5002894 and 2 more

What you should do

If you run the affected products, install Microsoft's update (KB5002905, KB5002906, KB5002894 and 2 more); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Missing authentication for critical function in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

Severity
Critical · CVSS 8.8
Type
Security updates
Services
SharePoint
Tags
Microsoft Office SharePoint, Elevation of Privilege, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-64911: Microsoft Office Remote Code Execution Vulnerability

Microsoft Office Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (see the release notes linked in the advisory).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+9 more) Fix see release notes

What you should do

If you run the affected products, install Microsoft's update (see the release notes linked in the advisory); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Tags
Microsoft Office, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-64910: Microsoft Office Remote Code Execution Vulnerability

Microsoft Office Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (see the release notes linked in the advisory).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+9 more) Fix see release notes

What you should do

If you run the affected products, install Microsoft's update (see the release notes linked in the advisory); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Untrusted pointer dereference in Microsoft Office allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Tags
Microsoft Office, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-64909: Microsoft Office Remote Code Execution Vulnerability

Microsoft Office Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (KB5002897 and release notes).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+11 more) Fix KB5002897

What you should do

If you run the affected products, install Microsoft's update (KB5002897 and release notes); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Integer underflow (wrap or wraparound) in Microsoft Office allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Tags
Microsoft Office, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-64907: Microsoft Office Word Remote Code Execution Vulnerability

Microsoft Office Word Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (KB5002901 and release notes).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+11 more) Fix KB5002901

What you should do

If you run the affected products, install Microsoft's update (KB5002901 and release notes); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Services
Microsoft 365 Apps
Tags
Microsoft Office Word, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-64903: Microsoft Office Remote Code Execution Vulnerability

Microsoft Office Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (KB5002897 and release notes).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+11 more) Fix KB5002897

What you should do

If you run the affected products, install Microsoft's update (KB5002897 and release notes); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Tags
Microsoft Office, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-64898: Microsoft Office Remote Code Execution Vulnerability

Microsoft Office Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (see the release notes linked in the advisory).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+9 more) Fix see release notes

What you should do

If you run the affected products, install Microsoft's update (see the release notes linked in the advisory); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Tags
Microsoft Office, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-63532: Microsoft Office Remote Code Execution Vulnerability

Microsoft Office Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (KB5002897 and release notes).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+11 more) Fix KB5002897

What you should do

If you run the affected products, install Microsoft's update (KB5002897 and release notes); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Tags
Microsoft Office, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-63526: Microsoft Office Graphics Component Remote Code Execution Vulnerability

Microsoft Office Graphics Component Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (KB5002897 and release notes).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+11 more) Fix KB5002897

What you should do

If you run the affected products, install Microsoft's update (KB5002897 and release notes); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Stack-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Tags
Microsoft Office, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-63525: Microsoft Office Word Remote Code Execution Vulnerability

Microsoft Office Word Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (KB5002901 and release notes).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+8 more) Fix KB5002901

What you should do

If you run the affected products, install Microsoft's update (KB5002901 and release notes); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Services
Microsoft 365 Apps
Tags
Microsoft Office Word, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-63519: Microsoft Office Graphics Component Remote Code Execution Vulnerability

Microsoft Office Graphics Component Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (see the release notes linked in the advisory).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+9 more) Fix see release notes

What you should do

If you run the affected products, install Microsoft's update (see the release notes linked in the advisory); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Tags
Microsoft Office, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-63518: Microsoft Office Word Remote Code Execution Vulnerability

Microsoft Office Word Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (KB5002755 and release notes).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+11 more) Fix KB5002755

What you should do

If you run the affected products, install Microsoft's update (KB5002755 and release notes); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Services
Microsoft 365 Apps
Tags
Microsoft Office Word, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-63515: Microsoft Office Remote Code Execution Vulnerability

Microsoft Office Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (KB5002902 and release notes).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+11 more) Fix KB5002902

What you should do

If you run the affected products, install Microsoft's update (KB5002902 and release notes); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Tags
Microsoft Office, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-63513: Microsoft Office Graphics Component Remote Code Execution Vulnerability

Microsoft Office Graphics Component Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (KB5002897 and release notes).

Severity Critical Exploited No Disclosed No Affects Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems (+11 more) Fix KB5002897

What you should do

If you run the affected products, install Microsoft's update (KB5002897 and release notes); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Tags
Microsoft Office, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-62911: Microsoft Exchange Server Elevation of Privilege Vulnerability

Microsoft Exchange Server Elevation of Privilege Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (KB5121576, KB5121573, KB5121574 and 1 more).

Severity Critical Exploited No Disclosed No Affects Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server 2019 Cumulative Update 14 (+2 more) Fix KB5121576, KB5121573, KB5121574 and 1 more

What you should do

If you run the affected products, install Microsoft's update (KB5121576, KB5121573, KB5121574 and 1 more); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Microsoft 365 / Office · msrc Original Microsoft announcement ↗
Details

Original Microsoft text

Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

Severity
Critical · CVSS 8.0
Type
Security updates
Services
Exchange Online
Tags
Microsoft Exchange Server, Elevation of Privilege, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-62893: Windows Deployment Services TFTP Server Remote Code Execution Vulnerability

Windows Deployment Services TFTP Server Remote Code Execution Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation More Likely. Microsoft publishes a customer-installable fix (KB5120238, KB5120242, KB5120229 and 5 more).

Severity Critical Exploited No Disclosed No Affects Windows Server 2012, Windows Server 2012 (Server Core installation) (+10 more) Fix KB5120238, KB5120242, KB5120229 and 5 more

What you should do

If you run the affected products, install Microsoft's update (KB5120238, KB5120242, KB5120229 and 5 more); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Details

Original Microsoft text

Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.

Severity
Critical · CVSS 9.8
Type
Security updates
Tags
Windows Deployment Services, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation More Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.
Review Recommended

CVE-2026-62890: Windows GDI+ Elevation of Privilege Vulnerability

Windows GDI+ Elevation of Privilege Vulnerability. Microsoft rates it Critical; not reported as exploited; not publicly disclosed; exploitability assessment: Exploitation Less Likely. Microsoft publishes a customer-installable fix (KB5120238, KB5120242, KB5120229 and others listed in the advisory).

Severity Critical Exploited No Disclosed No Affects Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems (+28 more) Fix KB5120238, KB5120242, KB5120229 and others listed in the advisory

What you should do

If you run the affected products, install Microsoft's update (KB5120238, KB5120242, KB5120229 and others listed in the advisory); the advisory lists the exact build per product. from Microsoft's advisory data

Why: Microsoft lists a customer-installable fix, so it matters if you run the affected products.

Details

Original Microsoft text

Heap-based buffer overflow in Windows GDI+ allows an authorized attacker to execute code locally.

Severity
Critical · CVSS 7.8
Type
Security updates
Tags
Windows GDI+, Remote Code Execution, 2026-Aug
Microsoft advisory data
Customer action required: Yes · Exploited: No · Publicly disclosed: No · Exploitation Less Likely · Remediation: update published
Classification
Derived from Microsoft's structured advisory fields, not by AI. Severity (Critical) is Microsoft's rating and is not treated as proof that action is needed.