VDB-372967 · CVE-2025-55639 · Issue 3260

GPAC 2.4 MP4Box isomedia/isom_write.c gf_isom_add_track_kind null pointer dereference

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5.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in GPAC 2.4. It has been rated as problematic. Affected by this issue is the function gf_isom_add_track_kind of the file isomedia/isom_write.c of the component MP4Box. This manipulation causes null pointer dereference. This vulnerability is tracked as CVE-2025-55639. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in GPAC 2.4. It has been declared as problematic. Affected by this vulnerability is the function gf_isom_add_track_kind of the file isomedia/isom_write.c of the component MP4Box. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

GPAC MP4Box v2.4 was discovered to contain a NULL pointer dereference in the gf_isom_add_track_kind() function at isomedia/isom_write.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted MP4 file.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2025-55639 since 08/13/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

Applying the patch 027ce139dda498ee95df36db9f9f6f3cadce8ec9 is able to eliminate this problem. The bugfix is ready for download at github.com.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Multimedia Player Software

Name

GPAC

Version

License

open-source

Website

Product: https://github.com/gpac/gpac/

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 6.5
ADP CISA Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 027ce139dda498ee95df36db9f9f6f3cadce8ec9

Timelineinfo

08/13/2025 CVE reserved
06/23/2026 +314 days Advisory disclosed
06/23/2026 +0 days VulDB entry created
06/23/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 3260
Status: Confirmed

CVE: CVE-2025-55639 (🔒)
GCVE (CVE): GCVE-0-2025-55639
GCVE (VulDB): GCVE-100-372967
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/23/2026 23:29
Changes: 06/23/2026 23:29 (71)
Complete: 🔍
Cache ID: 216::103