{"id":"CVE-2026-57973","title":"Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability","summary":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to perform tampering locally.","severity":"medium","cvss":6.3,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-367"],"vendor":"Microsoft","product":"Windows Subsystem for Linux (WSL2)","affected":["windows_subsystem_for_linux_wsl2 >= 5.0.0.0 < 2.7.10"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-07-15T03:58:38.849682Z"},"published":"2026-07-14","updated":"2026-09-17","sourceUpdated":"2026-09-17T22:33:38.413Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-57973","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57973","label":"Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability"}],"tags":["cve.org"],"epss":0.00217,"epssPercentile":0.12359,"ingestedAt":"2026-09-08T17:06:31.902Z","slug":"CVE-2026-57973","body":"## Overview\n\nTime-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to perform tampering locally.\n\n## Affected\n\n- `windows_subsystem_for_linux_wsl2 >= 5.0.0.0 < 2.7.10`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":34.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}