Read the docs
TI-2026-41735 Aliases CVE-2026-57973GHSA-32j5-g8f9-jjh7

Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability

Priority LOW 29CWE-367Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from Microsoft.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00217 12th percentileScored 2026-11-07
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:*:*:*:*:*:-:*:*before 2.7.10VulnerableMicrosoft
  • cpe:2.3:a:microsoft:windows_subsystem_for_linux:*:*:*:*:*:-:*:* Versions before 2.7.10 Vulnerable ·Microsoft

Remediation

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

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Tampering
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
Windows Subsystem for Linux (WSL2)Fixed 2.7.10 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-57973
  2. 2026-10-03 Alias added: GHSA-32j5-g8f9-jjh7

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-2026-72811 Race condition in Windows Subsystem for Linux allows local escalation 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