CVE-2026-4424

CVE-2026-4424 · Libarchive: libarchive: information disclosure via heap out-of-bounds read in rar archive processing

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This page shows selected source facts. See the linked advisories for the complete description and affected versions.

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.

CVSS 7.5 · High · EPSS 1.1% · Fix available

Published

2026-03-19T13:50:27.294Z

Updated

2026-10-14T19:08:47.014Z

Stack: system

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