Status: UPDATED
| Advisory ID: CVE-2026-56208
Key Details
| CVE | CVE-2026-56208 |
| CVSS Score / Version | 7.6 (High) / CVSS v3.1 |
| Updated | 2026-10-02 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H |
| CVSS Prose | attack vector is network; attack complexity is low; privileges required is none; user interaction is required; scope is unchanged; confidentiality impact is low; integrity impact is low; availability impact is high. |
| Affected products | see table below |
| Classified as | CWE-122 (Heap-based Buffer Overflow) |
| Exploitation prediction (EPSS) | 0.42% probability of exploitation in the next 30 days (34% percentile) -- FIRST.org's EPSS model. |
Affected Products, Subsystems & Sectors
| Subsystems | OT Supporting Infrastructure |
| Sectors | Multiple |
What to Know
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. (NVD)
What to Do
Monitor Red Hat's web page for any future patch releases.
References