# CVE-2025-60469: GPAC MP4Box NULL pointer dereference in AC4 parser

Source: https://junglewise.ai/threats/cve-2025-60469-a-null-pointer-dereference-in-the-gf-ac4-presentation-ch-mode  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-21. Updated: 2026-10-21  
License: CC BY 4.0 with a link back

CVE-2025-60469 · Severity: info · Published 2026-10-21

GPAC's MP4Box is a multimedia framework tool that processes video and audio files. A NULL pointer dereference in its AC4 audio codec parser allows attackers to crash the application by supplying a crafted AC4 audio file, causing a denial of service.

Technologies: [GPAC Project MP4Box](https://junglewise.ai/threats/technologies/gpac-project-mp4box). Vendors: [GPAC Project](https://junglewise.ai/threats/vendors/gpac-project).

## Quick answers

**Is CVE-2025-60469 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-60469 being exploited in the wild.

**How severe is CVE-2025-60469?** Informational severity, published 21 October 2026.

**Which products and versions are affected?** GPAC Project MP4Box before 2.5.

**Is there a fix for CVE-2025-60469?** Yes: fixed in 2.5. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2025-60469 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2025-60469?** Check whether you run GPAC Project MP4Box at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 2.5

## Technical details

A NULL pointer dereference exists in the gf_ac4_presentation_ch_mode function (av_parsers.c:15641) triggered when processing AC4 streams with unsupported presentation versions and missing substream groups. An attacker can trigger the crash by providing a malformed AC4 file to MP4Box; no authentication or special privileges are required. The vulnerability causes an application crash (DoS) and has been fixed in the repository.

## Affected products

- GPAC Project MP4Box before 2.5

## Timeline

- 2026-10-21: disclosed
- 2025-07-15: other: Fix committed to repository (commit e02d1fd)

## References

- [https://github.com/gpac/gpac/commit/e02d1fd24cdc26acb1b236ab38b3832cffcae21b](https://github.com/gpac/gpac/commit/e02d1fd24cdc26acb1b236ab38b3832cffcae21b)
- [https://github.com/gpac/gpac/issues/3292](https://github.com/gpac/gpac/issues/3292)

## Related threats

- [GPAC MP4Box heap use-after-free in AC4 descriptor parsing](https://junglewise.ai/threats/cve-2025-60476-a-heap-use-after-free-in-the-gf-odf-ac4-cfg-clean-list-function)
- [GPAC MP4Box null pointer dereference in GetESD](https://junglewise.ai/threats/cve-2025-60497-a-segmentation-violation-in-the-getesd-function-isomedia-track-c)
- [GPAC MP4Box segmentation violation in check_media_profile](https://junglewise.ai/threats/cve-2025-60493-a-segmentation-violation-in-the-check-media-profile-function)
- [GPAC MP4Box stack overflow in BIFS scene decoder](https://junglewise.ai/threats/cve-2025-60492-a-stack-overflow-in-the-gf-bifs-dec-node-function-bifs-field)
- [GPAC MP4Box heap use-after-free in dasher](https://junglewise.ai/threats/cve-2025-60491-a-heap-use-after-free-in-the-dasher-flush-segment-function)