CVE-2026-30754
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.
- Score
- CVSS 3.1 8.8 High
- Status
- Analyzed - cve@mitre.org
- Published
- 2026-09-08
- Last modified
- 2026-10-15
- Weaknesses
- CWE-787
Affected products
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20746
- https://github.com/momo-trip/poc_ffmpeg
- https://gist.github.com/momo-trip/4cddf2c9e15600873de55259dac6b0e6
