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NVD description
A heap buffer overflow vulnerability was found in libaom, the reference AV1 codec implementation. A flaw in the AV1 encoder's Look-Ahead Processing (LAP) mode causes the first-pass stats ring buffer wrap-around guard to be bypassed when g_lag_in_frames is set to 1 or higher. This results in a 232-byte out-of-bounds write on every encoded frame after the second, corrupting adjacent heap objects. An attacker who can influence encoder configuration in a transcoding service or WebRTC session could exploit this to cause a denial of service (process crash) or potentially achieve code execution.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
| Date | Total | Labels |
|---|
| 2026-06-25 | 1 | Disclosure1 |
| 2026-07-03 | 1 | Patch1 |
🐛 VULNERABILITIES CVE Notify: 🚨 [CVE-2026-56208](https://access.redhat.com/errata/RHSA-2026:30814) A heap buffer overflow vulnera... https://access.redhat.com/errata/RHSA-2026:30814 #PatchManagement #Vulnerability #CVE
Post summary
Red Hat issues a patch for CVE‑2026‑56208, a heap buffer overflow vulnerability, with no evidence of exploits or PoC.
🚨 HIGH: CVE-2026-56208 (CVSS 7.6) - Heap buffer overflow in libaom AV1 codec. 232-byte OOB write per frame after LAP mode bypass. Affects transcoding services & WebRTC. Potential RCE. Patch immediately. #CVE #PatchNow https://t.co/rq3z3SeeWK
Post summary
A new vulnerability, CVE-2026-56208, impacts the libaom AV1 codec with a heap buffer overflow that could lead to remote code execution, and users are urged to patch immediately.