CVE-2026-77899

EUVD-2026-73291
Use after free in Windows Security Center allows an authorized attacker to elevate privileges locally.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7 HIGH
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 17.32%
Affected Products (NVD)
VendorProductVersion
microsoftwindows_11_24h2
𝑥
< 10.0.26100.9445
microsoftwindows_11_25h2
𝑥
< 10.0.26200.9445
microsoftwindows_11_26h1
𝑥
< 10.0.28000.2954
microsoftwindows_server_2012
-
𝑥
= Vulnerable software versions
Windows Releases
Platform
Version
Windows 11
24H2 (arm64, x64)
KB5124008
25H2 (arm64, x64)
KB5124008
26H1 (arm64, x64)
KB5124012
Windows Server 2012
Server Core
KB5123065
Standard
KB5123065
Common Weakness Enumeration
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77899