Is there a public exploit for CVE-2026-4424?

No public exploit for CVE-2026-4424 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-4424?

CVE-2026-4424 scores CVSS 7.5 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 1.26%.

What does CVE-2026-4424 affect?

CVE-2026-4424 affects Red Hat Red Hat Update Infrastructure 5, Red Hat AI Inference Server 3.2, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Cert Manager support for Red Hat OpenShift release 1.17, RHEL-8 based Middleware Containers.

7.5 High

A flaw was found in libarchive.

CVE-2026-4424

A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.

Assessment

CVSS: 7.5 (v3.1)
Severity: High
EPSS: 1.26% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 19 March 2026
Last updated: 4 November 2026
Affected: Red Hat · Cert Manager support for Red Hat OpenShift release 1.17 · Cert Manager support for Red Hat OpenShift release 1.18 · Cert Manager support for Red Hat OpenShift release 1.20 · RHEL-8 based Middleware Containers
Assigner: redhat

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

At the source

EUVD (ENISA)

References

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