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.
History

Thu, 10 Sep 2026 04:30:00 +0000

Type Values Removed Values Added
Title Memory Corruption in FFmpeg RTP Encoding Leading to Potential Remote Code Execution

Wed, 09 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-787
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 08 Sep 2026 20:45:00 +0000

Type Values Removed Values Added
Description 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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-09-08T00:00:00.000Z

Updated: 2026-09-09T15:18:09.979Z

Reserved: 2026-03-04T00:00:00.000Z

Link: CVE-2026-30754

cve-icon Vulnrichment

Updated: 2026-09-09T15:18:04.785Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-08T21:17:06.990

Modified: 2026-09-09T16:17:02.720

Link: CVE-2026-30754

cve-icon Redhat

No data.