CVE-2026-56184

EUVD-2026-44243
Exposure of sensitive information to an unauthorized actor in Windows Win32K allows an authorized attacker to disclose information locally.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Windows Releases
Platform
Version
Windows 10
21H2 (arm64, x64, x86)
KB5099539
22H2 (arm64, x64, x86)
KB5099539
Windows 11
24H2 (arm64, x64)
KB5101650
25H2 (arm64, x64)
KB5101650
26H1 (arm64, x64)
KB5101649
Windows Server 2022
Standard
KB5099540
Windows Server 2025
Server Core
KB5099536
Standard
KB5099536
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56184