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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-4424 Detail

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

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://access.redhat.com/errata/RHSA-2026:10065 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:10097 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:11768 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:8492 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:8510 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:8517 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:8521 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:8534 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:8864 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:8865 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:8866 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:8867 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:8873 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:8908 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:8944 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:9026 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:9592 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/errata/RHSA-2026:9832 Red Hat, Inc. Third Party Advisory 
https://access.redhat.com/security/cve/CVE-2026-4424 Red Hat, Inc. Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=2449006 Red Hat, Inc. Issue Tracking  Third Party Advisory 
https://github.com/libarchive/libarchive/pull/2898 Red Hat, Inc. Issue Tracking  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

18 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-4424
NVD Published Date:
03/19/2026
NVD Last Modified:
04/30/2026
Source:
Red Hat, Inc.