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CVE-2026-4424

Libarchive Libarchive

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.

What the metrics mean

  • It is reachable over a network, without needing local access.
  • For an attacker who can reach it, no special conditions are needed to exploit it.
  • To exploit it, no account is needed.
  • Beyond that, no action by a user is required.

Scoring

CVSS
7.5 (v3.1)
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-125
Assigned by
secalert@redhat.com

Dates

Published
2026-03-19
Last modified
2026-08-31
Sources
NVD

Affected products

  • Libarchive Libarchiveall versions
  • Redhat Hardened Imagesall versions
  • Redhat Openshift Container Platform4.0, 4.16
  • Redhat Openshift Container Platform For Arm644.16
  • Redhat Openshift Container Platform For Power4.16
  • Redhat Enterprise Linux6.0, 7.0, 8.0, 9.0, 10.0
  • Redhat Enterprise Linux Server Aus8.2, 8.4

As listed in the NVD configuration data. Not a statement about your estate.

References