CVE-2026-44810Critical

Microsoft Cryptographic Services Elevation of Privilege Vulnerability

MSRC advisory NVD CVE.org

Assessment

Improper authentication in Windows Cryptographic Services allows an unauthorized attacker to elevate privileges locally.

Severity: Critical
CVSS base score: 8.4CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Impact: Elevation of Privilege
EPSS, next 30 days: 0.3%Higher than 20.5% of scored CVEs · FIRST model run 29 Sep 2026 · about EPSS
Public exploit code: No Nuclei template lists it
Exploitability: Exploitation Less Likely
Publicly disclosed: No
Customer action: Required: apply the update
Component: Windows Cryptographic Services
Weakness: CWE-287: Improper Authentication
Issued by: Microsoft
Published: 9 Jun 2026 · June 2026
Last revised: 9 Jun 2026

5 KBs

KB	Type	Restart	Applies to	Other CVEs
KB5093998	Security Update	Required	Windows 11 Version 23H2 for ARM64-based Systems, Windows 11 Version 23H2 for x64-based Systems	All CVEs in KB5093998
KB5094125	Security Update	Required	Windows Server 2025, Windows Server 2025 (Server Core installation)	All CVEs in KB5094125
KB5094126	Security Update	Required	Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems, Windows 11 Version 25H2 for ARM64-based Systems and 1 more	All CVEs in KB5094126
KB5094128	Security Update	Required	Windows Server 2022, Windows Server 2022 (Server Core installation)	All CVEs in KB5094128
KB5095051	Security Update	Required	Windows 11 Version 26H1 for ARM64-based Systems, Windows 11 version 26H1 for x64-based Systems	All CVEs in KB5095051

12 affected products