CVE-2026-125205 (GCVE-0-2026-125205)
Vulnerability from cvelistv5 – Published: 2026-11-09 19:11 – Updated: 2026-11-09 21:06
VLAI
EPSS
VEX
Title
FFmpeg through 9.0.2 Memory Exhaustion via av1_frame_merge Bitstream Filter
Summary
FFmpeg through 9.0.2 contains an unbounded memory allocation vulnerability in the av1_frame_merge bitstream filter that allows attackers to exhaust memory by never sending a temporal delimiter OBU. Attackers can supply a crafted .obu file opened by the AV1 OBU or Annex B demuxers, forcing unlimited OBU buffering per temporal unit and causing denial of service.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 21:00 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
VulnCheck
CNA
References
5 references
| URL | Tags |
|---|---|
| https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25569 | issue-tracking |
| https://github.com/FFmpeg/FFmpeg/commit/c90bbc203… | patch |
| https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/liba… | technical-description |
| https://github.com/FFmpeg/FFmpeg | product |
| https://www.vulncheck.com/advisories/ffmpeg-throu… | third-party-advisory |
Impacted products
Date Public
2026-10-28 00:00
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