Use of uninitialized resource in Microsoft Windows and Windows Server - CVE-2026-96150
Published: November 11, 2026
Vulnerability identifier: #VU165754
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-96150
CWE-ID: CWE-908
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose portions of private image data previously handled by the thumbnail service outside a restricted app environment.
The vulnerability exists due to use of an uninitialized resource in Microsoft Windows Codecs Library when processing thumbnail requests. A local user can submit a thumbnail request from a restricted app environment to access private image data remaining in reused memory.
Successful exploitation requires the thumbnail service to have previously processed private image data and subsequently reuse related memory for the thumbnail request; this combination is not guaranteed.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-96150
Install security update from vendor's website.
Microsoft Windows - addressed in versions 10 21H2 10.0.19044.7846, 10 22H2 10.0.19045.7846, 10 1607 10.0.14393.9688, 10 1809 10.0.17763.9487, 11 23H2 10.0.22631.7711, 11 24H2 10.0.26100.9911, 11 24H2 10.0.26100.9974, 11 25H2 10.0.26200.9911, 11 25H2 10.0.26200.9974, 11 26H1 10.0.28000.3501
Windows Server - addressed in versions 2016 10.0.14393.9688, 2019 10.0.17763.9487, 2022 10.0.20348.5870, 2025 10.0.26100.33730, 2025 10.0.26100.33822
Windows Server - addressed in versions 2016 10.0.14393.9688, 2019 10.0.17763.9487, 2022 10.0.20348.5870, 2025 10.0.26100.33730, 2025 10.0.26100.33822