Risk Letters

Exploited vulnerability

CVE-2023-38831

TLP:CLEAR

RARLAB WinRAR Code Execution Vulnerability

RARLAB WinRAR contains an unspecified vulnerability that allows an attacker to execute code when a user attempts to view a benign file within a ZIP archive.

Facts

  • Vendor: RARLAB
  • Product: WinRAR
  • CVSS: 7.8
  • EPSS (probability of exploitation within 30 days): 99.8 %
  • On CISA's Known Exploited Vulnerabilities list since: 24 August 2023
  • First known exploitation: 24 August 2023
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 14 September 2023
  • Weakness: CWE-351
  • First seen by Risk Letters: 24 August 2023

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