Is there a public exploit for CVE-2026-125255?

No public exploit for CVE-2026-125255 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-125255?

CVE-2026-125255 scores CVSS 5.8 (v4.0), rated medium.

What does CVE-2026-125255 affect?

CVE-2026-125255 affects FFMPEG FFmpeg.

5.8 Medium

FFmpeg through 9.0.2 contains a use after free vulnerability in libavcodec/mjpegdec.c that allows attackers to trigger freed buffer reads…

CVE-2026-125255

FFmpeg through 9.0.2 contains a use after free vulnerability in libavcodec/mjpegdec.c that allows attackers to trigger freed buffer reads by sending a SOF marker without a preceding SOI. Attackers can supply crafted MJPEG streams causing ffmjpegdecodesof() to pass a stale rawimagebuffer pointer to hwaccel decoders like NVDEC, crashing applications or leaking heap contents.

Assessment

CVSS: 5.8 (v4.0)
Severity: Medium
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 9 November 2026
Last updated: 9 November 2026
Affected: FFMPEG · FFmpeg
Assigner: VulnCheck

CVSS vectorCVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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