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.
History

Thu, 16 Apr 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Aus
Redhat rhel Els
CPEs cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:rhel_aus:8.2::baseos
cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel Aus
Redhat rhel Els
References

Thu, 16 Apr 2026 19:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:8 cpe:/a:redhat:enterprise_linux:8::crb
cpe:/o:redhat:enterprise_linux:8::baseos
References

Thu, 16 Apr 2026 17:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:9 cpe:/a:redhat:enterprise_linux:9::appstream
cpe:/o:redhat:enterprise_linux:9::baseos
References

Thu, 16 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:10.1
References

Thu, 09 Apr 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat hummingbird
CPEs cpe:/a:redhat:hummingbird:1
Vendors & Products Redhat hummingbird

Fri, 20 Mar 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Libarchive
Libarchive libarchive
Redhat openshift Container Platform
Vendors & Products Libarchive
Libarchive libarchive
Redhat openshift Container Platform

Fri, 20 Mar 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Thu, 19 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 19 Mar 2026 14:30:00 +0000

Type Values Removed Values Added
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.
Title Libarchive: libarchive: information disclosure via heap out-of-bounds read in rar archive processing
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
Weaknesses CWE-125
CPEs cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat openshift
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-03-19T13:50:27.294Z

Updated: 2026-04-16T19:28:16.800Z

Reserved: 2026-03-19T12:23:38.191Z

Link: CVE-2026-4424

cve-icon Vulnrichment

Updated: 2026-03-19T17:07:50.644Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-03-19T15:16:28.300

Modified: 2026-04-16T20:16:39.123

Link: CVE-2026-4424

cve-icon Redhat

Severity : Important

Publid Date: 2026-03-19T00:00:00Z

Links: CVE-2026-4424 - Bugzilla