Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2026-21242

Use after free in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.

Published

2026-02-10T18:16:25.323

Last Modified

2026-02-11T20:56:41.543

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 7.0 (HIGH)

Weaknesses
  • Type: Secondary
    CWE-416
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System microsoft windows_10_21h2 < 10.0.19044.6937 Yes
Operating System microsoft windows_10_21h2 < 10.0.19044.6937 Yes
Operating System microsoft windows_10_22h2 < 10.0.19045.6937 Yes
Operating System microsoft windows_10_22h2 < 10.0.19045.6937 Yes
Operating System microsoft windows_11_23h2 < 10.0.22631.6649 Yes
Operating System microsoft windows_11_23h2 < 10.0.22631.6649 Yes
Operating System microsoft windows_11_24h2 < 10.0.26100.7781 Yes
Operating System microsoft windows_11_24h2 < 10.0.26100.7781 Yes
Operating System microsoft windows_11_25h2 < 10.0.26200.7781 Yes
Operating System microsoft windows_11_25h2 < 10.0.26200.7781 Yes
Operating System microsoft windows_server_2022 < 10.0.20348.4711 Yes
Operating System microsoft windows_server_2022_23h2 < 10.0.25398.2149 Yes
Operating System microsoft windows_server_2025 < 10.0.26100.32313 Yes
References