CVE-2026-30754

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20746 Issue Tracking Patch
https://gist.github.com/momo-trip/4cddf2c9e15600873de55259dac6b0e6 Third Party Advisory
https://github.com/momo-trip/poc_ffmpeg Exploit
Configurations

Configuration 1 (hide)

cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
History

15 Oct 2026, 19:25

Type Values Removed Values Added
CPE cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
First Time Ffmpeg
Ffmpeg ffmpeg
References () https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20746 - () https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20746 - Issue Tracking, Patch
References () https://gist.github.com/momo-trip/4cddf2c9e15600873de55259dac6b0e6 - () https://gist.github.com/momo-trip/4cddf2c9e15600873de55259dac6b0e6 - Third Party Advisory
References () https://github.com/momo-trip/poc_ffmpeg - () https://github.com/momo-trip/poc_ffmpeg - Exploit
Information

Published : 2026-09-08 21:17

Updated : 2026-10-15 19:25

NVD link : CVE-2026-30754

Mitre link : CVE-2026-30754

CVE.ORG link : CVE-2026-30754

JSON object : View

Products Affected

ffmpeg

  • ffmpeg
CWE
CWE-787

Out-of-bounds Write