Is there a public exploit for CVE-2026-56211?

No public exploit for CVE-2026-56211 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-2026-56211?

CVE-2026-56211 scores CVSS 7.1 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.88%.

What does CVE-2026-56211 affect?

CVE-2026-56211 affects Red Hat Red Hat AI Inference Server 3.3, Red Hat OpenShift AI 3.4, Red Hat OpenShift AI 3.5, Red Hat Enterprise Linux AI 3.4 for RHEL 9, Red Hat OpenShift AI 3.3, Red Hat AI Inference Server 3.2.

7.1 High

A remote code execution vulnerability was found in libaom, the reference AV1 codec implementation.

CVE-2026-56211

A remote code execution vulnerability was found in libaom, the reference AV1 codec implementation. Insufficient bounds validation in the AV1 encoder's SVC (Scalable Video Coding) layer ID control allows an attacker to supply crafted video frame pixels that overlap with internal encoder layer context structures. In fork-based video processing services, an attacker can use this to hijack the cyclic refresh map pointer, brute-force the process base address via a crash oracle, and redirect control flow to achieve arbitrary command execution. Exploitation requires the target service to use libaom with SVC encoding enabled and accept attacker-supplied video frames.

Assessment

CVSS: 7.1 (v3.1)
Severity: High
EPSS: 0.88% 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 June 2026
Last updated: 4 November 2026
Affected: Red Hat · Red Hat AI Inference Server 3.2 · Red Hat AI Inference Server 3.3 · Red Hat Enterprise Linux AI 3.3 · Red Hat Enterprise Linux AI 3.3 for RHEL 9
Assigner: redhat

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

At the source

EUVD (ENISA)

References

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