{"id":"CVE-2021-36955","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-36955","summary":"Windows Common Log File System Driver Elevation of Privilege Vulnerability","details":"Windows Common Log File System Driver Elevation of Privilege Vulnerability","published":"2021-09-15T12:15:13.197","modified":"2026-08-10T20:19:11.800","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.04037,"percentile":0.90054,"asOf":"2026-09-15"},"cisaKev":null,"exploitsKnown":3,"affectedPackages":[],"fix":null,"references":[{"type":"FIX","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36955"},{"type":"FIX","url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36955"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36955"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-10T20:19:11.800"}}