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TI-2026-72811 Aliases CVE-2026-85879GHSA-7xvg-wj2h-x3rp

Race condition in Windows Subsystem for Linux allows local escalation

Priority LOW 32CWE-367Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Microsoft Windows Subsystem for Linux (WSL2) from 5.0.0.0 before 2.7.10 is affected. A time-of-check time-of-use race condition (CWE-367) lets an authorized local attacker gain higher privileges.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00214 11th percentileScored 2026-11-08
Fix Fixed Windows Subsystem for Linux (WSL2) (Microsoft): 2.7.10

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftWindows Subsystem for Linux (WSL2)5.0.0.0 to before 2.7.102.7.10Patch availableCNA
  • Windows Subsystem for Linux (WSL2) VendorMicrosoft Affected 5.0.0.0 to before 2.7.10 Fixed in 2.7.10 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:windows_subsystem_for_linux:*:*:*:*:*:*:*:*2.0.0 to before 2.7.10VulnerableMicrosoft
  • cpe:2.3:a:microsoft:windows_subsystem_for_linux:*:*:*:*:*:*:*:* Versions 2.0.0 to before 2.7.10 Vulnerable ·Microsoft

Remediation

Upgrade Windows Subsystem for Linux (WSL2) to version 2.7.10.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Windows Subsystem for Linux (WSL2) (Microsoft) Fixed in 2.7.10

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-85879
  2. 2026-10-13 Alias added: GHSA-7xvg-wj2h-x3rp
  3. 2026-10-14 CISA SSVC decision points changed

References

Patch 1

  • TI-2021-19685 Visual Studio Code WSL Extension Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2025-38532 Windows Subsystem for Linux GUI Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2022-21992 Windows Subsystem for Linux (WSL2) Kernel Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.8
  • TI-2026-41733 Windows Subsystem for Linux (WSL2) Kernel Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.8
  • TI-2022-17732 Windows Subsystem for Linux (WSL2) Kernel Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.0
  • TI-2025-33684 Windows Subsystem for Linux (WSL2) Kernel Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.0
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences