FFmpeg 8.1 through 9.0.2 contains a denial of service vulnerability in the lcevc_metadata bitstream filter caused by a process block position mismatch in lcevc_metadata_handle_vui(). Attackers can supply crafted LCEVC access units with two IDR or non-IDR NAL units to trigger an av_assert0 failure in ff_cbs_lcevc_list_add(), aborting the application.

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Workaround

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History

Tue, 10 Nov 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 09 Nov 2026 19:15:00 +0000

Type Values Removed Values Added
Description FFmpeg 8.1 through 9.0.2 contains a denial of service vulnerability in the lcevc_metadata bitstream filter caused by a process block position mismatch in lcevc_metadata_handle_vui(). Attackers can supply crafted LCEVC access units with two IDR or non-IDR NAL units to trigger an av_assert0 failure in ff_cbs_lcevc_list_add(), aborting the application.
Title FFmpeg 8.1 through 9.0.2 Denial of Service via lcevc_metadata Bitstream Filter
First Time appeared Ffmpeg
Ffmpeg ffmpeg
Weaknesses CWE-617
CPEs cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
Vendors & Products Ffmpeg
Ffmpeg ffmpeg
References
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 5.7, 'vector': 'CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-09T21:06:57.282Z

Reserved: 2026-11-09T18:15:08.374Z

Link: CVE-2026-125189

cve-icon Vulnrichment

Updated: 2026-11-09T21:02:19.469Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-09T19:16:54.630

Modified: 2026-11-10T21:46:41.330

Link: CVE-2026-125189

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-09T23:00:10Z

Weaknesses