VULNERABILITY INTELLIGENCE

CVE-2026-4424

CVSS score7.5 HIGH
EPSS probability1.26%
CISA KEVNot currently listed
Published2026-03-19
Last modified2026-10-14
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Description

A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.

Weakness classification

  • secalert@redhat.com: CWE-125
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-125

Primary references