# CVE-2025-60489: GPAC MP4Box NULL pointer dereference in dasher timeline entry

Source: https://junglewise.ai/threats/cve-2025-60489-a-null-pointer-dereference-in-the-dasher-insert-timeline-entry  
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-2025-60489 · Severity: info · Published 2026-10-21

GPAC's MP4Box is a multimedia processing tool that converts and manipulates video files. A flaw in its DASH segmentation feature allows an attacker to crash the application by supplying a specially crafted MP4 file with corrupted timing metadata, resulting in 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-2025-60489 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-60489 being exploited in the wild.

**How severe is CVE-2025-60489?** Informational severity, published 21 October 2026.

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

**Is there a fix for CVE-2025-60489?** Yes: fixed in 2.5. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2025-60489 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2025-60489?** 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 occurs in the dasher_insert_timeline_entry function within filters/dasher.c when processing MP4 files with corrupted DTS (Decoding Time Stamp) sequence data that result in empty DASH segments. The vulnerability is triggered when the dasher filter attempts to access timeline entries without validating pointer states first. An attacker can supply a malformed MP4 file to trigger this crash.

## Affected products

- GPAC Project MP4Box before 2.5

## Timeline

- 2026-10-21: disclosed: Published on NVD

## References

- [https://github.com/gpac/gpac/commit/4860a1a6f128ccc9ae37b4b738d22029f9672457](https://github.com/gpac/gpac/commit/4860a1a6f128ccc9ae37b4b738d22029f9672457)
- [https://github.com/gpac/gpac/issues/3325](https://github.com/gpac/gpac/issues/3325)

## 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 AC4 parser](https://junglewise.ai/threats/cve-2025-60469-a-null-pointer-dereference-in-the-gf-ac4-presentation-ch-mode)
- [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)