Status: UPDATED
| Advisory ID: CVE-2026-56209
Key Details
| CVE | CVE-2026-56209 |
| CVSS Score / Version | 7.1 (High) / CVSS v3.1 |
| Updated | 2026-10-02 |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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 none; integrity impact is low; availability impact is high. |
| Affected products | see table below |
| Classified as | CWE-787 (Out-of-bounds Write) |
Affected Products, Subsystems & Sectors
| Subsystems | General OT |
| Sectors | Multiple |
What to Know
An arbitrary address write vulnerability was found in libaom, the reference AV1 codec implementation. A missing bounds check in the SVC (Scalable Video Coding) layer ID control function allows an attacker to inject an arbitrary pointer into the cyclic refresh map field via crafted image pixel values. The encoder then writes approximately 1,200 bytes at the attacker-controlled address. This is fully deterministic and does not require a separate information leak. An attacker who can supply frames to a network-facing libaom encoder with SVC enabled could exploit this for denial of service or potential code execution. (NVD)
What to Do
Monitor Red Hat's web page for any future patch releases.
References