CVE-2026-5121

7.5 HIGH
Published: March 30, 2026 Modified: April 16, 2026
View on NVD

Description

A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. This could potentially allow for arbitrary code execution on the affected system.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-5121
Source: secalert@redhat.com
Third Party Advisory
https://github.com/advisories/GHSA-2vwv-vqpv-v8vc
Source: secalert@redhat.com
Third Party Advisory
https://github.com/libarchive/libarchive/pull/2934
Source: secalert@redhat.com
Issue Tracking Patch

8 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.1%
24th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

redhat libarchive