# CVE-2021-3560: Red Hat Polkit Incorrect Authorization Vulnerability

> CVE-2021-3560: Red Hat Polkit Incorrect Authorization Vulnerability. CVSS 7.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2021-3560
Last updated: 2025-10-21T23:15:46Z

- Published: 2022-02-16 00:00 UTC · Updated: 2025-10-21 23:15 UTC · Assigner: redhat
- CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 23.7%, 98th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2023-05-12, federal due date 2023-06-02, ransomware use: Unknown
- CWE: CWE-863

## Description

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.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- n/a: polkit

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-3560)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2021-3560)
- [http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html](http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html)
- [http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html](http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html)
- [https://bugzilla.redhat.com/show\_bug.cgi?id=1961710](https://bugzilla.redhat.com/show_bug.cgi?id=1961710)
- [https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/](https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2021-3560 · Markdown: https://rewindex.com/cve/CVE-2021-3560.md · JSON: https://rewindex.com/api/v1/cves/CVE-2021-3560 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:50:31.400Z