CVE-2026-4424

Name of the Vulnerable Software and Affected Versions libarchive (affected versions not specified)

Description A heap out-of-bounds read issue exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. An attacker can exploit this by providing a specially crafted RAR archive, potentially leading to the disclosure of sensitive heap memory information. This does not require authentication or user interaction.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.