CVE-2026-75144CWE-122

CVE-2026-75144

High · published August 19, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
9.2
In the wild
Unconfirmed
What it is

FFmpeg before commit 1cdeb3c contains a heap buffer overflow vulnerability in the VC-2/Dirac RTP packetizer (libavformat/rtpenc_vc2hq.c) that allows attackers to trigger memory corruption by supplying a crafted Dirac data unit. The packetizer copies an input-derived data unit or fragment size into a fixed-size buffer without an upper bound check, causing a heap buffer overflow when the crafted input is packetized for RTP output.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
8.5 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00199 · 9.2th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-08-19T21:21Z
References (3)
https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/1cdeb3c4e7f1f8566d846b9b451e01c376398818 · [email protected]https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24091 · [email protected]https://www.vulncheck.com/advisories/ffmpeg-heap-buffer-overflow-in-vc-2-dirac-rtp-packetizer · [email protected]
EPSS history
Timeline
  • 19 AUG 16:26Z
    FFmpeg Heap Buffer Overflow in VC-2/Dirac RTP Packetizer
    cvelistv5