CVE-2025-55643CWE-476

CVE-2025-55643

Medium · published June 16, 2026

CVSS v3.1

5.5

EPSS

Percentile

14.6

In the wild

Unconfirmed

What it is

A NULL pointer dereference in the TrackWriter handling component (filters/mux_isom.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

The record

Technical detail

CVSS v3.1: 5.5 · MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0: Not supplied
EPSS: 0.00243 · 14.6th percentile
Weakness: CWE-476 · NULL Pointer Dereference
Published: 2026-06-16T00:16Z

Affected products (1)

Product	Versions	Fixed in
gpac/gpac	< 26.02.0	26.02.0

References (2)

https://infosec.exchange/@sigdevel/116736819671963019 · [email protected]http://www.openwall.com/lists/oss-security/2026/06/13/5 · af854a3a-2127-422b-91ae-364da2661108

EPSS history

Timeline

15 JUN 00:00Z
A NULL pointer dereference in the TrackWriter handling component (filters/mux_isom.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS)…
cvelistv5