CVE-2026-57973

MEDIUM

Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-57973. PoCs published by riddhimaan-sth404.

AI-analyzed exploit summary Technical analysis of CVE-2026-57973, a TOCTOU race condition in Windows Subsystem for Linux (WSL) allowing local data tampering. The writeup details the root cause (CWE-367), execution flow, and impact assessment but does not include exploit code.

Description

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

Exploits (1)

github WRITEUP
by riddhimaan-sth404 · poc
https://github.com/riddhimaan-sth404/CVE-2026-57973

Technical analysis of CVE-2026-57973, a TOCTOU race condition in Windows Subsystem for Linux (WSL) allowing local data tampering. The writeup details the root cause (CWE-367), execution flow, and impact assessment but does not include exploit code.

Classification
Writeup 98%
Attack Type
Other
Complexity
Complex
Reliability
Racy
Target: Windows Subsystem for Linux (WSL versions prior to 2.7.10)
Auth required
Prerequisites: Local access to the target system · Low privileges within WSL · Ability to exploit precise timing for race condition
mistral-large-3 · analyzed Jul 27, 2026 Full analysis →

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57973

Scores

CVSS v3 6.3
EPSS 0.0016
EPSS Percentile 6.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-367
Status published
Products (2)
Microsoft/Windows Subsystem for Linux (WSL2) 5.0.0.0 - 2.7.10
microsoft/windows_subsystem_for_linux < 2.7.10
Published Jul 14, 2026
Tracked Since Jul 14, 2026