Use of uninitialized resource in Microsoft Windows and Windows Server - CVE-2026-20962
Published: January 13, 2026
Vulnerability identifier: #VU121228
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-20962
CWE-ID: CWE-908
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to bypass certain security restrictions.
The vulnerability exists due to usage of uninitialized resources in Dynamic Root of Trust for Measurement (DRTM). A local administrator can pass specially crafted data to the application, trigger uninitialized usage of resources and gain access to sensitive information on the system.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-20962
Install updates from vendor's website.
Microsoft Windows - addressed in versions 10 21H2 10.0.19044.6809, 10 22H2 10.0.19045.6809, 10 1809 10.0.17763.8276, 11 23H2 10.0.22631.6491, 11 24H2 10.0.26100.7456, 11 24H2 10.0.26100.7623
Windows Server - addressed in versions 2019 10.0.17763.8276, 2022 23H2 10.0.25398.2092, 2022 10.0.20348.4648, 2025 10.0.26100.32230
Windows Server - addressed in versions 2019 10.0.17763.8276, 2022 23H2 10.0.25398.2092, 2022 10.0.20348.4648, 2025 10.0.26100.32230