Out-of-bounds read in Microsoft Windows and Windows Server - CVE-2026-119862
Published: November 11, 2026
Vulnerability identifier: #VU165297
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-2026-119862
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escape a sandbox and elevate privileges from a low integrity level to a medium integrity level.
The vulnerability exists due to an out-of-bounds read in Windows Input System when accessed by code executing in a low-privilege AppContainer. A local user can exploit the flaw from code running in that environment to escape the sandbox and elevate privileges on the affected system.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-119862
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 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 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 2019 10.0.17763.9487, 2022 10.0.20348.5870, 2025 10.0.26100.33730, 2025 10.0.26100.33822