Threat Intelligence / CVE / CVE-2026-56211

CVE-2026-56211

CVSS 7.1 (HIGH) · Priority 5.6/10 · Published 2026-06-19

As of 2026-06-19, CVE-2026-56211 is a CVSS 7.1 (HIGH-severity) vulnerability. Public exploit code available. Threadlinqs Intelligence tracks 0 threats exploiting it.

Last updated: 2026-06-19

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.

CVSS v3 vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:H

Weaknesses (CWE)

CWE-787

Exploitation status

public exploit code available

References

Full detection coverage & IOCs for threats exploiting CVE-2026-56211 are available via the Threadlinqs MCP server (Purple tier). View plans →

← all vulnerabilities · Markdown version · Threadlinqs Intelligence

Enriched from CVE.org, NVD (this product uses the NVD API but is not endorsed or certified by the NVD), FIRST EPSS, CISA KEV, and GitHub Security Advisories.