Buffer over-read in Microsoft Windows and Windows Server - CVE-2026-119943
Published: November 11, 2026
Vulnerability identifier: #VU165364
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-119943
CWE-ID: CWE-126
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the affected system.
The vulnerability exists due to a buffer over-read in Microsoft Windows Search Component when processing data. A local user can trigger reads beyond the boundaries of a buffer to escalate privileges locally.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-119943
Install security update from vendor's website.
Microsoft Windows - addressed in versions 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 2025 10.0.26100.33730, 2025 10.0.26100.33822
Windows Server - addressed in versions 2025 10.0.26100.33730, 2025 10.0.26100.33822