Is there a public exploit for CVE-2026-120243?

No public exploit for CVE-2026-120243 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-2026-120243?

CVE-2026-120243 scores CVSS 6.8 (v4.0), rated medium.

What does CVE-2026-120243 affect?

CVE-2026-120243 affects FFMPEG FFmpeg.

6.8 Medium

FFmpeg 2.0 through 9.0.2 contains a use of uninitialized variable vulnerability in the Go2Meeting decoder that allows attackers to leak…

CVE-2026-120243

FFmpeg 2.0 through 9.0.2 contains a use of uninitialized variable vulnerability in the Go2Meeting decoder that allows attackers to leak stack memory through out-of-range palette indices. Attackers can craft a G2M3/G2M4 stream with a short Kempf palette so kempfrestorebuf() copies uninitialized stack bytes, including pointers or stack guards, into decoded output.

Assessment

CVSS: 6.8 (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: 1 November 2026
Last updated: 1 November 2026
Affected: FFMPEG · FFmpeg
Assigner: VulnCheck

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

At the source

EUVD (ENISA)

References

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