CVE-2026-4424

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/19/2026

Last Modified3/20/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-125

References

https://access.redhat.com/security/cve/CVE-2026-4424(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2449006(secalert@redhat.com)

https://github.com/libarchive/libarchive/pull/2898(secalert@redhat.com)

IOC Correlations

No correlations recorded

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