CVE-2026-30754

HIGH 8.8

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

A memory corruption vulnerability exists in FFmpeg before 8.1. The RTP encoding process. In the nal_send function in libavformat/rtpenc_h264_hevc.c, a negative size parameter (size=-3) is passed to memcpy when transmitting H.264/HEVC streams via RTP using a crafted input file. This was detected using AddressSanitizer.

Vendor	n/a
Product	n/a
Published	Sep 8, 2026
Last Updated	Sep 9, 2026

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Affected Versions

n/a / n/a

n/a

References

NVD ↗ CVE.org ↗ EPSS Data ↗

code.ffmpeg.org: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20746 github.com: https://github.com/momo-trip/poc_ffmpeg gist.github.com: https://gist.github.com/momo-trip/4cddf2c9e15600873de55259dac6b0e6