{"id":"CVE-2021-3560","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-3560","summary":null,"details":"It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.","published":"2022-02-16T19:15:08.450Z","modified":"2026-10-24T10:30:56.253291823Z","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":0.22193,"percentile":0.97538,"asOf":"2026-09-14"},"cisaKev":null,"exploitsKnown":33,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3560"},{"type":"ADVISORY","url":"http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html"},{"type":"ADVISORY","url":"http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1961710"},{"type":"EVIDENCE","url":"https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:30:56.253291823Z"}}