CVE-2025-55651

Modified Modified - Updated After Analysis

NULL Pointer Dereference in GPAC MP4Box via Crafted MP4 File

Publication date: 2026-06-09

Last updated on: 2026-06-14

Assigner: MITRE

Description

A NULL pointer dereference in the gf_isom_get_user_data_count function (isomedia/isom_read.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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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-2025-55651

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 function gf_isom_get_user_data_count within the isomedia/isom_read.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 leads to a crash or abnormal termination of the program, resulting in a Denial of Service (DoS) condition.

Impact Analysis

The primary impact of this vulnerability is that an attacker can cause a Denial of Service (DoS) by supplying a maliciously crafted MP4 file to the vulnerable GPAC MP4Box software.

This means the software may crash or become unavailable, potentially disrupting services or workflows that depend on it.

Compliance Impact

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

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