Medium severity5.5NVD Advisory· Published Nov 9, 2026

CVE-2026-125200

Description

FFmpeg through 9.0.2 contains a memory leak vulnerability in libavcodec/libx265.c because libx265_encode_frame() never frees the rpu.payload allocated by ff_dovi_rpu_generate(). Attackers can supply crafted Dolby Vision HEVC or AV1 files that leak one RPU allocation per encoded frame during libx265 transcoding, causing unbounded memory growth and denial of service.

AI Insight

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

Affected products

FFmpeg/Ffmpegllm-fuzzy
Range: <=9.0.2

Patches

Vulnerability mechanics

References

code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25416nvd
github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/libx265.cnvd
github.com/FFmpeg/FFmpeg/commit/8dc4af2bbbd0d650e299a3d327bd48c775120e11nvd
www.vulncheck.com/advisories/ffmpeg-through-9.0.2-memory-leak-via-libx265-dolby-vision-rpu-payloadsnvd

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cvss	0.358
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000