CVE-2026-5121: Libarchive: libarchive: arbitrary code execution via integer overflow in iso9660 image processing

Overview

Severity

High (CVSS 8.6)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Mar

Released

2026-04-02

EPSS Score

0.18% (percentile: 40.1%)

Affected Products (2)

Other

• 21141-17086
• 21142-17084

Revision History

• 2026-04-02: Information published.