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CVE-2026-57973

Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability

MEDIUM
4.7
CVSS Score
Published: July 14, 2026 at 05:09 PM UTC
Updated: October 24, 2026 at 09:10 PM UTC
1 product affected across 1 vendorWindows Subsystem for Linux

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Severity
MEDIUM4.7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Windows Subsystem for Linux· Microsoft
95%
v < 2.7.105.0.0.0
Affected range stops below 2.7.10, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57973

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.7MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-367

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