CVE-2026-5121

HighCVSS 7.5/10Last modified Oct 14, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-190

Affected software

No affected versions have been published.

Timeline

Published: Mar 30, 2026
Last modified: Oct 14, 2026
NVD status: Modified

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