CVE-2026-4424
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
Mar 19, 2026
Vendor
unknown
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.