CVE-2021-4034
Red Hat Polkit Out-of-Bounds Read and Write Vulnerability
CVSS
—
No CVSS
EPSS
94.9%
p100
KEV
YES
Jun 27, 2022
Exploit Today
80
0-100
Published: — · Last modified: —
94.9%EPSS · 30 days94.9%
2026-06-302026-07-16
Product
Red Hat / Polkit
Vulnerability
Red Hat Polkit Out-of-Bounds Read and Write Vulnerability
Added to KEV
Jun 27, 2022
Remediate by
Jul 18, 2022
Known ransomware use
No
Summary 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.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-4034
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2021-3560—97.4%
KEV—79Red Hat Polkit Incorrect Authorization Vulnerability—