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CVE-2026-85879

HighCVSS 7.0/10Last modified Oct 29, 2026

Description

Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.

Metrics

CVSS 3.1 7.0/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

Vendor	Product	Versions
Microsoft	Windows Subsystem for Linux (WSL2)	>= 5.0.0.0, < 2.7.10

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85879Patch, Vendor Advisory

Timeline

Published: Oct 13, 2026
Last modified: Oct 29, 2026
NVD status: Analyzed

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