CVE-2026-5121

HIGH

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.

CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Published: 3/30/2026Modified: 7/14/2026

Related Intelligence (0)

No articles currently reference this CVE.

References (37)

https://access.redhat.com/errata/RHSA-2026:10065https://access.redhat.com/errata/RHSA-2026:10097https://access.redhat.com/errata/RHSA-2026:11768https://access.redhat.com/errata/RHSA-2026:12071https://access.redhat.com/errata/RHSA-2026:12274https://access.redhat.com/errata/RHSA-2026:13812https://access.redhat.com/errata/RHSA-2026:14773https://access.redhat.com/errata/RHSA-2026:14937https://access.redhat.com/errata/RHSA-2026:15087https://access.redhat.com/errata/RHSA-2026:16008https://access.redhat.com/errata/RHSA-2026:16009https://access.redhat.com/errata/RHSA-2026:16030https://access.redhat.com/errata/RHSA-2026:16174https://access.redhat.com/errata/RHSA-2026:17596https://access.redhat.com/errata/RHSA-2026:19724https://access.redhat.com/errata/RHSA-2026:19725https://access.redhat.com/errata/RHSA-2026:20040https://access.redhat.com/errata/RHSA-2026:21690https://access.redhat.com/errata/RHSA-2026:25096https://access.redhat.com/errata/RHSA-2026:8510https://access.redhat.com/errata/RHSA-2026:8517https://access.redhat.com/errata/RHSA-2026:8521https://access.redhat.com/errata/RHSA-2026:8534https://access.redhat.com/errata/RHSA-2026:8864https://access.redhat.com/errata/RHSA-2026:8866https://access.redhat.com/errata/RHSA-2026:8867https://access.redhat.com/errata/RHSA-2026:8873https://access.redhat.com/errata/RHSA-2026:8908https://access.redhat.com/errata/RHSA-2026:8944https://access.redhat.com/errata/RHSA-2026:9026https://access.redhat.com/errata/RHSA-2026:9592https://access.redhat.com/errata/RHSA-2026:9832https://access.redhat.com/security/cve/CVE-2026-5121Third Party Advisoryhttps://bugzilla.redhat.com/show_bug.cgi?id=2452945https://github.com/advisories/GHSA-2vwv-vqpv-v8vcThird Party Advisoryhttps://github.com/libarchive/libarchive/pull/2934Issue TrackingPatchhttps://cert-portal.siemens.com/productcert/html/ssa-585531.html