CVE-2026-85879
High
Description
Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
SeverityHigh
CVSS7.0
Exploit probability—
Product
Microsoft Windows Subsystem For Linux
PublishedOct 13, 2026
First seenOct 13, 2026
Weakness typeCWE-367CWE-367
How to fix
Update
- microsoft windows_subsystem_for_linux2.7.10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft windows_subsystem_for_linux | 2.0.0 ≤ v < 2.7.10 | 2.7.10 |
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