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CVE-2026-125219

7, high

FFmpeg Out-of-Bounds Write Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7, high high CVSS v3.1
EPSS, next 30 days
n/a
Exploitation
No public evidence
Published
9 Nov 2026yesterday

Description

FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in vdpau_hevc_start_frame() in libavcodec/vdpau_hevc.c that copies unbounded PPS tile counts into fixed-size VDPAU arrays. Attackers can supply crafted HEVC bitstreams with excessive tile columns or rows to write controlled 16-bit values past heap-allocated hwaccel data, corrupting memory in applications using VDPAU decoding.

Details

Vendor
FFmpeg
Product
FFmpeg
Weakness
CWE-787 (opens in a new tab)
Status
Received
Updated
9 Nov 2026
Assigner
disclosure@vulncheck.com

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

References 4

Other references 4

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other FFmpeg CVEs

Every FFmpeg CVE we hold

Same vendor in what we hold, not a known link between the flaws.

Beyond this page

Is CVE-2026-125219 in your network?

This page tells you how dangerous CVE-2026-125219 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 10 Nov 2026, not the live upstream state.