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CVE-2026-5121: libarchive Version not applicable in the source CPE; +39 more affected products
CVE-2026-5121 affects cbl2 libarchive 3.6.1-9 on CBL Mariner 2.0. CVSS 3.1 base score 7.5 (HIGH, Vendor/CNA). EPSS 0.0143 (percentile 0.72297), scored 12-Oct-2026.
Affected technology
libarchive · Version not applicable in the source CPE
libarchive
hardened images · Version not applicable in the source CPE
redhat
openshift container platform · 4.0
redhat
enterprise linux · 6.0
redhat
enterprise linux · 7.0
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enterprise linux · 8.0
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enterprise linux · 9.0
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enterprise linux · 10.0
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Red Hat Enterprise Linux 7 Extended Lifecycle Support · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 8 · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 8.2 Advanced Update Support · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 8.6 Telecommunications Update Service · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 8.8 Telecommunications Update Service · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 9 · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 9.4 Extended Update Support · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 9.6 Extended Update Support · Exact affected versions not specified by the source
Red Hat
Red Hat OpenShift Container Platform 4.12 · Exact affected versions not specified by the source
Red Hat
Red Hat OpenShift Container Platform 4.13 · Exact affected versions not specified by the source
Red Hat
Red Hat OpenShift Container Platform 4.14 · Exact affected versions not specified by the source
Red Hat
Red Hat OpenShift Container Platform 4.15 · Exact affected versions not specified by the source
Red Hat
Red Hat OpenShift Container Platform 4.16 · Exact affected versions not specified by the source
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Red Hat OpenShift Container Platform 4.17 · Exact affected versions not specified by the source
Red Hat
Red Hat OpenShift Container Platform 4.18 · Exact affected versions not specified by the source
Red Hat
Red Hat OpenShift Container Platform 4.19 · Exact affected versions not specified by the source
Red Hat
RHEL-8 based Middleware Containers · Exact affected versions not specified by the source
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Cert Manager support for Red Hat OpenShift release 1.17 · Exact affected versions not specified by the source
Red Hat
Cert Manager support for Red Hat OpenShift release 1.18 · Exact affected versions not specified by the source
Red Hat
Cert Manager support for Red Hat OpenShift release 1.20 · Exact affected versions not specified by the source
Red Hat
Red Hat AI Inference Server 3.2 · Exact affected versions not specified by the source
Red Hat
Red Hat AI Inference Server 3.3 · Exact affected versions not specified by the source
Red Hat
Red Hat Discovery 2 · Exact affected versions not specified by the source
Red Hat
Red Hat Hardened Images · Exact affected versions not specified by the source
Red Hat
Red Hat Insights proxy 1.5 · Exact affected versions not specified by the source
Red Hat
Red Hat Update Infrastructure 5 · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 10 · Exact affected versions not specified by the source
Red Hat
Red Hat Enterprise Linux 6 · Exact affected versions not specified by the source
Red Hat
SIDIS Secured SmartPlug · 0 to before V7.26.0310
Siemens
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
What an attacker can do
A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. Vendor/CNA’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality impact as high; integrity and availability impact as none. Source advisory’s CVSS 3.1 assessment (base score 9.8/10) rates confidentiality, integrity and availability impact as high.
- CWE
- CWE-190
- Product
- cbl2 libarchive 3.6.1-9 on CBL Mariner 2.0
- CCR priority
- 30.4 /100 (P4)
- CVSS 3.1
- 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N · Vendor/CNA
- EPSS
- 0.0143 · percentile 0.72337 · 2026-10-13
- KEV
- no
Provenance
- FIRST EPSS daily exploit-probability · Source record · observed 2026-10-14 05:24:14.258005+00:00 UTC
- Microsoft MSRC Security Update Guide (CVRF) · Source record · observed 2026-10-04 07:08:49.022374+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-14 05:19:44.455882+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-5121.html