{"id":"CVE-2026-57973","aliases":["EUVD-2026-44280","GHSA-32j5-g8f9-jjh7"],"status":"published","title":"Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability","description":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to perform tampering locally.","severity":{"version":"3.1","score":6.3,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00217,"percentile":0.12218,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-367"],"published":"2026-07-14T17:09:40Z","modified":"2026-11-10T22:40:16Z","exploits":[{"source":"pocgithub","id":"riddhimaan-sth404/CVE-2026-57973","title":"riddhimaan-sth404/CVE-2026-57973","date":"2026-10-02","url":"https://github.com/riddhimaan-sth404/CVE-2026-57973"}],"products":[{"vendor":"microsoft","product":"windows subsystem for linux (wsl2)"},{"vendor":"microsoft","product":"windows_subsystem_for_linux"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57973","tags":["vendor-advisory","patch","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57973"},{"url":"https://github.com/advisories/GHSA-32j5-g8f9-jjh7"}],"sources":{"cve":[{"id":"CVE-2026-57973","title":"Windows Subsystem for Linux (WSL2) Kernel Tampering Vulnerability","description":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to perform tampering locally.","status":"published","published":"2026-07-14T17:09:40.251Z","modified":"2026-11-10T22:40:16.154Z","cvss":[{"version":"3.1","score":6.3,"vector":"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","level":"medium","assessor":"cna"}],"cwes":["CWE-367"],"updated_at":"2026-11-10T23:49:29.755102Z"}],"euvd":[{"id":"EUVD-2026-44280","description":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to perform tampering locally.","status":"published","published":"2026-07-14T17:09:40Z","modified":"2026-11-10T22:40:16Z","cvss":[{"version":"3.1","score":6.3,"vector":"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","level":"medium"}],"updated_at":"2026-11-11T00:24:47.005432Z"}],"ghsa":[{"id":"GHSA-32j5-g8f9-jjh7","title":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an...","description":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to perform tampering locally.","status":"published","published":"2026-07-14T18:32:40Z","modified":"2026-07-14T18:32:49Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"medium"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T15:09:31.319926Z"}],"nvd":[{"id":"CVE-2026-57973","description":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to perform tampering locally.","status":"published","published":"2026-07-14T18:18:35.46Z","modified":"2026-10-24T21:10:00.13Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:12:29.489525Z"}],"osv":[{"id":"CVE-2026-57973","description":"Time-of-check time-of-use (toctou) race condition in Windows Subsystem for Linux allows an authorized attacker to perform tampering locally.","status":"published","published":"2026-07-14T18:18:35.46Z","modified":"2026-10-26T07:27:39.827122638Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:12.016252Z"}]}}