{"id":"CVE-2021-31956","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-31956","summary":"Windows NTFS Elevation of Privilege Vulnerability","details":"Windows NTFS Elevation of Privilege Vulnerability","published":"2021-06-08T23:15:08.847","modified":"2026-06-17T03:52:33.957","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":0.22273,"percentile":0.97522,"asOf":"2026-09-08"},"cisaKev":null,"exploitsKnown":8,"affectedPackages":[],"fix":null,"references":[{"type":"FIX","url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31956"},{"type":"FIX","url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31956"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31956"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-06-17T03:52:33.957"}}