ARM: CVE-2025-10263 Completion of affected memory accesses might not be guaranteed by completion of a TLBI [kernel]

No cwe for this issue in Windows Kernel allows an unauthorized attacker to elevate privileges locally.

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9.3CVSS out of 10Critical severity

Scope

What the vendor says is affected

Windows 11 Version 26H1 for ARM64-based Systems
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 Version 22H2 for ARM64-based Systems
Windows 11 Version 25H2 for ARM64-based Systems
Windows 11 Version 23H2 for ARM64-based Systems
Windows 11 Version 24H2 for ARM64-based Systems

Versions the vendor lists as fixed

10.0.28000.2269
10.0.19044.7417
10.0.19045.7417
10.0.26200.8655
10.0.22631.7219
10.0.26100.8655

Next step

What the vendor recommends

Install KB5095051. Install KB5094127. Install KB5094126. Install KB5093998.

Review the complete instructions on the vendor's site

Timeline

When this advisory changed

Jun 9, 2026 at 7:00 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Sep 28, 2026 at 11:20 AM UTC
Added to SecurityAlert
We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2025-10263View CVSS, KEV, EPSS, and threat context

Source

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Vendor: Microsoft Security Response Center
Advisory ID: CVE-2025-10263
Last source check: Sep 28, 2026 at 11:20 AM UTC

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What the vendor says is affected

Versions the vendor lists as fixed

What the vendor recommends

When this advisory changed

CVEs named in this advisory

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