CVE-2025-71469
Deferred Deferred - Pending Action

Type Confusion in GPAC MP4Box via XMT File

Publication date: 2026-11-15

Last updated on: 2026-11-15

Assigner: VulnCheck

Description
GPAC before 26.02.0 contains a type confusion vulnerability in ctxload_process() that passes non-object descriptors to ODS_SetupOD() without checking the descriptor tag. Attackers can supply a crafted XMT file with a URL-bearing descriptor that crashes MP4Box or other GPAC-based applications in gf_scene_ns_connect_object(), causing denial of service.

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Meta Information

Published
2026-11-15
Last Modified
2026-11-15
Generated
2026-11-15
AI Q&A
2026-11-15
EPSS Evaluated
N/A
NVD
CVE-2025-71469
EUVD
EUVD-2025-211338

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
gpac gpac From 0 (inc) to 26.2.0 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-843 The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

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Executive Summary

CVE-2025-71469 is a type confusion vulnerability in GPAC before version 26.02.0. It occurs in the ctxload_process() function where non-object descriptors are passed to ODS_SetupOD() without checking the descriptor tag. Attackers can exploit this by providing a crafted XMT file with a URL-bearing descriptor, causing MP4Box or GPAC-based apps to crash in gf_scene_ns_connect_object(), leading to denial of service.

Detection Guidance

To detect this vulnerability, monitor for crashes in GPAC-based applications like MP4Box when processing XMT files. Check for segmentation faults or null-pointer dereferences in gf_scene_ns_connect_object(). Use tools like AddressSanitizer to identify crashes during file parsing.

Impact Analysis

This vulnerability allows attackers to crash MP4Box or GPAC-based applications by supplying a maliciously crafted XMT file. This could disrupt multimedia processing, cause application instability, or lead to denial-of-service conditions on affected systems.

Compliance Impact

This vulnerability primarily causes denial of service in GPAC-based applications by crashing MP4Box or similar tools when processing crafted XMT files. It does not directly impact data confidentiality or integrity, which are key concerns for GDPR or HIPAA compliance. However, if such crashes disrupt critical systems processing personal or health data, it could indirectly affect availability requirements under these regulations.

Mitigation Strategies

Immediately upgrade GPAC to version 26.02.0 or later to patch the type confusion flaw. Avoid processing untrusted XMT or BT files until patched. Monitor for suspicious file processing attempts in logs.

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