CVE-2025-55643 - 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

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MEDIUM

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

Published Jun 15, 2026

5.5

MEDIUM

CVSS 3.1

EPSS 0.24%

Description

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.

Affected products

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-476

NULL Pointer Dereference

References (3)

http://www.openwall.com/lists/oss-security/2026/06/13/5
ExploitMailing ListThird Party Advisory
https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-210143
Advisory
https://infosec.exchange/@sigdevel/116736819671963019
ExploitMitigationPatchThird Party Advisory

Link	Providers	Tags
http://www.openwall.com/lists/oss-security/2026/06/13/5		ExploitMailing ListThird Party Advisory
https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-210143		Advisory
https://infosec.exchange/@sigdevel/116736819671963019		ExploitMitigationPatchThird Party Advisory