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CVE-2026-30754

8.8 high SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 8.8 · ffmpegNVD modified 2026-10-15 19:25

Affected (CPE criteria) 1

  • cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*

References 3