Integer overflow in Ffmpeg

CVE-2025-63757

Integer overflow vulnerability in the yuv2ya16_X_c_template function in libswscale/output.c in FFmpeg 8.0.

Vulnerability class: Integer Overflow

EPSS: 0.003 (25.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

  • Ffmpeg — versions 8
  • N/a — versions n/a

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-63757?
CVE-2025-63757 is a high-severity vulnerability in Ffmpeg, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2025-12-18.
How severe is CVE-2025-63757?
High severity. CVSS v3 base score is 7.5 out of 10.