CVE-2026-4426

mediumpriority · track · 0EPSS 0.006 · 47 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.58% (47th) EPSS

CVSS 6.5 · medium

Is it mine?

28 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cert_bund

EPSS · scored 2026-10-22

A flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression logic, caused by improper validation of a field (`pz_log2_bs`) read from ISO9660 Rock Ridge extensions. A remote attacker can exploit this by supplying a specially crafted ISO file. This can lead to incorrect memory allocation and potential application crashes, resulting in a denial-of-service (DoS) condition.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:Hsecondary · secalert@redhat.com USexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1335US

affected products (28)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
IBM MQall versionscert_bundDEcpe:/a:ibm:mq:-
IBM MQ Agentall versionscert_bundDEcpe:/a:ibm:mq:agent
NetApp ActiveIQ Unified Manager for VMware vSphereall versionscert_bundDEcpe:/a:netapp:active_iq_unified_manager:for_vmware_vsphere
Open Source libarchiveall versionscert_bundDEcpe:/a:libarchive:libarchive:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Red Hat OpenShift≤ Container Platform <4.15.64cert_bundDE
Red Hat OpenShift≤ Container Platform <4.19.32cert_bundDE
Red Hat OpenShift≤ Container Platform <4.13.67cert_bundDE
Red Hat OpenShift≤ Container Platform <4.17.54cert_bundDE
Red Hat Red Hat OpenShift Container Platform <4.13.67≤ Container Platform <4.13.67cert_bundDE
Red Hat Red Hat OpenShift Container Platform <4.15.64≤ Container Platform <4.15.64cert_bundDE
Red Hat Red Hat OpenShift Container Platform <4.17.54≤ Container Platform <4.17.54cert_bundDE
Red Hat Red Hat OpenShift Container Platform <4.19.32≤ Container Platform <4.19.32cert_bundDE
Red Hat Red Hat Hardened Images< 3.8.7-1.hum1enisa_euvdEU

showing 20 of 28

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0803libarchive: Mehrere Schwachstellen ermöglichen Offenlegung von Informationen und DoSDeutsch2026-03-19csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in libarchive ausnutzen, um Informationen offenzulegen und um einen Denial-of-Service-Zustand zu erzeugen.

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund NVD CVE.org MITRE

published 2026-03-19modified 2026-09-01

references (13)

External citations — patches, advisories, analysis.

scry

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