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CVE-2026-107678

MediumCVSS 5.7 / 10
Published Oct 8, 2026·Last modified Oct 9, 2026
Affected Components(37)
ffmpeg/ffmpeg
n7.2-dev
ffmpeg/ffmpeg
n4.4-dev
ffmpeg/ffmpeg
n8.2-dev
1 / 13
Description

FFmpeg through 9.0.2 contains a stack exhaustion vulnerability in av_encryption_init_info_free() in libavutil/encryption_info.c, which recursively frees AVEncryptionInitInfo linked lists built by the MOV demuxer's mov_read_pssh(). Attackers can supply a crafted MP4 file with tens of thousands of small pssh boxes to exhaust the stack and crash the process, while also causing quadratic CPU consumption.

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Risk Scores
Base Score
5.7

The vulnerability requires local access to the device to be exploited. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker does not need any special privileges or access rights.

Threat Intelligence
1.9

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
0.08%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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