CVE-2026-4424

HighCVSS 7.5/10Last modified Oct 14, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Mar 19, 2026
Last modified
Oct 14, 2026
NVD status
Modified

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CVE-2026-4424: High severity, CVSS 7.5 | Vulnix