Risk Letters

Exploited vulnerability

CVE-2021-4034

TLP:CLEAR

Red Hat Polkit Out-of-Bounds Read and Write Vulnerability

The Red Hat polkit pkexec utility contains an out-of-bounds read and write vulnerability that allows for privilege escalation with administrative rights.

Facts

  • Vendor: Red Hat
  • Product: Polkit
  • CVSS: 7.8
  • EPSS (probability of exploitation within 30 days): 94.9 %
  • On CISA's Known Exploited Vulnerabilities list since: 27 June 2022
  • First known exploitation: 27 June 2022
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 18 July 2022
  • Weakness: CWE-787
  • First seen by Risk Letters: 27 June 2022

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD