CVE-2025-55659

Modified Modified - Updated After Analysis

NULL Pointer Dereference in GPAC MP4Box

Publication date: 2026-06-09

Last updated on: 2026-06-14

Assigner: MITRE

Description

A NULL pointer dereference in the ctts_box_write function (isomedia/box_code_base.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

CVSS Scores

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Meta Information

Published

2026-06-09

Last Modified

2026-06-14

Generated

2026-06-30

AI Q&A

2026-06-09

EPSS Evaluated

2026-06-28

NVD

CVE-2025-55659

Affected Vendors & Products

Vendor	Product	Version / Range
gpac	gpac	2.4

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-476	The product dereferences a pointer that it expects to be valid but is NULL.

Attack-Flow Graph

Executive Summary

This vulnerability is a NULL pointer dereference in the ctts_box_write function within the isomedia/box_code_base.c file of GPAC MP4Box version 2.4. It occurs when the software processes a specially crafted MP4 file, which causes the program to attempt to access memory through a NULL pointer.

This results in a Denial of Service (DoS) condition, meaning the application can crash or become unresponsive due to this error.

Impact Analysis

The primary impact of this vulnerability is that an attacker can cause the GPAC MP4Box application to crash or stop functioning by providing a maliciously crafted MP4 file.

This Denial of Service (DoS) can disrupt normal operations, potentially affecting any system or service relying on GPAC MP4Box for media processing.

Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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