CVE-2026-66040
A remote, anonymous attacker can exploit multiple vulnerabilities in ffmpeg to cause memory corruption, execute arbitrary code, trigger a denial-of-service condition, or disclose confidential information.
CSIRTS triage
- What
- Multiple vulnerabilities in ffmpeg can lead to memory corruption, arbitrary code execution, denial of service, or information disclosure.
- Who is affected
- Deployments of ffmpeg.
- Urgency
- Remediation is high due to the critical nature of the vulnerabilities and potential for exploitation.
- Action
- Update ffmpeg to the latest version.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.55% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 43% of all EPSS-scored CVEs.
Advisory coverage (2)
- high[NEW] [high] ffmpeg: Multiple vulnerabilitiescert-bund · 2026-07-27
- highCVE-2026-66040: FFmpeg through 8.1.2, fixed in commit b506faf, contains a heap out-of-bounds write vulnerabili…nvd · 2026-07-24
External references
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