CVE-2026-50444

HIGH

Windows Server Update Service (WSUS) Elevation of Privilege Vulnerability

Title source: cna
STIX 2.1

Description

Missing authentication for critical function in Windows Server Update Service allows an authorized attacker to elevate privileges over a network.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Windows Server Update Service (WSUS) Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50444

Scores

CVSS v3 8.8
EPSS 0.0060
EPSS Percentile 45.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-306
Status published
Products (21)
Microsoft/Windows 10 Version 1607 10.0.14393.0 - 10.0.14393.9339
Microsoft/Windows 10 Version 1809 10.0.17763.0 - 10.0.17763.9020
Microsoft/Windows Server 2012 6.2.9200.0 - 6.2.9200.26226
Microsoft/Windows Server 2012 (Server Core installation) 6.2.9200.0 - 6.2.9200.26226
Microsoft/Windows Server 2012 R2 6.3.9600.0 - 6.3.9600.23291
Microsoft/Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 - 6.3.9600.23291
Microsoft/Windows Server 2016 10.0.14393.0 - 10.0.14393.9339
Microsoft/Windows Server 2016 (Server Core installation) 10.0.14393.0 - 10.0.14393.9339
Microsoft/Windows Server 2019 10.0.17763.0 - 10.0.17763.9020
Microsoft/Windows Server 2019 (Server Core installation) 10.0.17763.0 - 10.0.17763.9020
... and 11 more
Published Jul 14, 2026
Tracked Since Jul 14, 2026