CVE-2026-49173

EUVD-2026-43987
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 25.74%
Affected Products (NVD)
VendorProductVersion
microsoftwindows_11_26h1
𝑥
< 10.0.28000.2269
microsoftwindows_11_26h1
𝑥
< 10.0.28000.2525
𝑥
= Vulnerable software versions
Windows Releases
Platform
Version
Windows 11
26H1 (arm64, x64)
KB5101649
Common Weakness Enumeration
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49173