June 27, 2022 · Applied Cybernetics Group
CVE-2021-4034 — Red Hat Polkit
Red Hat Polkit Out-of-Bounds Read and Write Vulnerability
- Added to KEV
2022-06-27- Federal due date
2022-07-18- Vendor
- Red Hat
- Product
- Polkit
- EPSS
- 99.5th percentile (score 0.881, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-4034
CISA short description
The Red Hat polkit pkexec utility contains an out-of-bounds read and write vulnerability that allows for privilege escalation with administrative rights.
Required action
Apply updates per vendor instructions.