Disclosure summary
Access of resource using incompatible type ('type confusion') in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
Source-reported weakness categories
CWE-843, CWE-822
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2026-Jan
Open original source · Updated Jan 13, 2026
Win32k Elevation of Privilege Vulnerability
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 7.8
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | Windows Server 2022 | (MSRC status code 3) |
| Microsoft update guide | Windows Server 2022 (Server Core installation) | (MSRC status code 3) |
| Microsoft update guide | Windows Server 2025 (Server Core installation) | (MSRC status code 3) |
| Microsoft update guide | Windows 11 Version 25H2 for ARM64-based Systems | (MSRC status code 3) |
| Microsoft update guide | Windows 11 Version 25H2 for x64-based Systems | (MSRC status code 3) |
| Microsoft update guide | Windows 11 Version 23H2 for ARM64-based Systems | (MSRC status code 3) |
| Microsoft update guide | Windows 11 Version 23H2 for x64-based Systems | (MSRC status code 3) |
| Microsoft update guide | Windows Server 2022, 23H2 Edition (Server Core installation) | (MSRC status code 3) |
| Microsoft update guide | Windows 11 Version 24H2 for ARM64-based Systems | (MSRC status code 3) |
| Microsoft update guide | Windows 11 Version 24H2 for x64-based Systems | (MSRC status code 3) |
| Microsoft update guide | Windows Server 2025 | (MSRC status code 3) |
Vendor remediation references
- 5073457 · build 10.0.20348.4648 · product IDs 11923, 11924
- Vendor guidance · product IDs 11923, 11924
- 5073457 · product IDs 11923, 11924
- 5073379 · build 10.0.26100.32230 · product IDs 12437, 12436
- Vendor guidance · product IDs 12437, 12436
- 5073379 · product IDs 12437, 12436
- 5074109 · build 10.0.26200.7623 · product IDs 20437, 20438
- Vendor guidance · product IDs 20437, 20438
- 5074109 · product IDs 20437, 20438, 12389, 12390
- 5073455 · build 10.0.22631.6491 · product IDs 12242, 12243
- Vendor guidance · product IDs 12242, 12243
- 5073455 · product IDs 12242, 12243
- 5073450 · build 10.0.25398.2092 · product IDs 12244
- Vendor guidance · product IDs 12244
- 5073450 · product IDs 12244
- 5074109 · build 10.0.26100.7623 · product IDs 12389, 12390
- Vendor guidance · product IDs 12389, 12390
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-01-13T03:00:00-05:00
MODIFIED 2026-01-13T03:00:00-05:00
INGESTED 2026-10-08T12:45:21-04:00