CVE-2026-21519
Microsoft · Published February 10, 2026
7.8
CVSS v3.1
HIGHCISA KEV — Federal agencies must patch by deadline
Actively exploited in the wild
Patch availableGet patch
Description
Access of resource using incompatible type ('type confusion') in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
Affected Products
- Windows 10 1607 < 10.0.14393.8868
- Windows 10 1809 < 10.0.17763.8389
- Windows 10 21h2 < 10.0.19044.6937
- Windows 10 22h2 < 10.0.19045.6937
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H