CVE-2026-88110

Windows Graphics Kernel Elevation of Privilege Vulnerability

CVE-2026-88110 is fixed in 8 products on 1 platform, first by KB5127648, released October 13, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.0

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0028

20th percentile

<p>Heap-based buffer overflow in Windows Graphics Kernel allows an authorized attacker to elevate privileges locally.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows 11 Version 24H2 for ARM64-based Systems		KB5127648	Oct 13, 2026
Windows 11 Version 24H2 for x64-based Systems		KB5127648	Oct 13, 2026
Windows 11 Version 25H2 for ARM64-based Systems		KB5127648	Oct 13, 2026
Windows 11 Version 25H2 for x64-based Systems		KB5127648	Oct 13, 2026
Windows 11 Version 26H2 for ARM64-based Systems		KB5127648	Oct 13, 2026
Windows 11 Version 26H2 for x64-based Systems		KB5127648	Oct 13, 2026
Windows Server 2025	26100.33650	KB5126646	Oct 13, 2026
Windows Server 2025 (Server Core installation)	26100.33650	KB5126646	Oct 13, 2026

Details

Published
October 13, 2026
Weakness
Heap-based Buffer Overflow
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88110

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