Medium severity4.7NVD Advisory· Published Nov 9, 2026

CVE-2026-125223

Description

FFmpeg 8.0 through 9.0.2 contains a memory leak vulnerability in the VP9 decoder that allows attackers to exhaust memory because vp9_decode_frame() skips resetting the CBS fragment on error paths. Attackers can supply a crafted VP9 stream with invalid tile sizes decoded with slice threading to leak packet buffers and units, exhausting memory in the decoding application.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

FFmpeg/Ffmpegllm-fuzzy
Range: 8.0 - 9.0.2

Patches

Vulnerability mechanics

References

code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25232nvd
github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/vp9.cnvd
github.com/FFmpeg/FFmpeg/commit/bcce3232016695f5e482867519c45727a0a2a2c9nvd
www.vulncheck.com/advisories/ffmpeg-8.0-through-9.0.2-memory-leak-in-vp9-decoder-via-vp9-decode-framenvd

News mentions

No linked articles in our index yet.

cvss	0.306
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000