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VULNERABILITIES

CVE-2026-125239 Details

Description

FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in ff_dxva2_hevc_fill_picture_parameters() that allows attackers to corrupt memory via unbounded non-uniform tile counts. Attackers can supply crafted HEVC bitstreams with many non-uniformly spaced tiles to write controlled 16-bit values past fixed-size DXVA arrays during DXVA2, D3D11VA, or D3D12VA decoding on Windows.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7 HIGHVector:CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25136 [email protected]
https://github.com/FFmpeg/FFmpeg [email protected]
https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/dxva2_hevc.c#L151 [email protected]
https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-heap-buffer-overflow-via-hevc-dxva-tile-parameters [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-787Out-of-bounds Write[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-125239
NVD Published Date:
Nov 9, 2026
NVD Last Modified:
Nov 10, 2026
Source:
[email protected]
CVE-2026-125239 Details - Not Deferred