CVE-2026-85879: high-severity vulnerability in Microsoft Windows Subsystem for Linux (WSL2)
Windows Subsystem for Linux Elevation of Privilege Vulnerability
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7epss 0.2%
exploitation probability
0.2%top 92% of all CVEs
observed exploitation
nono source reports it
Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Windows Subsystem for Linux (WSL2)Related CVEs — Microsoft Windows Subsystem for Linux (WSL2)
In the same product, most dangerous first.
CVE-2022-44689HIGHWindows Subsystem for Linux (WSL2) Kernel Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2026-96206MEDIUMWindows Subsystem for Linux Information Disclosure VulnerabilityEPSS 0.4%CVE-2022-38014HIGHWindows Subsystem for Linux (WSL2) Kernel Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-57968HIGHWindows Subsystem for Linux (WSL2) Kernel Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2025-53788HIGHWindows Subsystem for Linux (WSL2) Kernel Elevation of Privilege VulnerabilityEPSS 0.2%CVE-2026-57973MEDIUMWindows Subsystem for Linux (WSL2) Kernel Tampering VulnerabilityEPSS 0.2%