# CVE-2025-60496: GPAC MP4Box floating-point exception in reframer

Source: https://junglewise.ai/threats/cve-2025-60496-a-floating-point-exception-fpe-in-the-reframer-send-packet  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2025-60496 · Severity: info · Published 2026-10-20

MP4Box is a multimedia file processing tool used to manipulate MP4 video and audio files. A crafted or truncated MP4 file can trigger a division-by-zero crash in the reframer component, causing the tool to abort and resulting in a denial of service during file processing operations.

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-2025-60496 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-60496 being exploited in the wild.

**How severe is CVE-2025-60496?** Informational severity, published 20 October 2026.

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

**Is there a fix for CVE-2025-60496?** Yes: fixed in 2.5. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2025-60496 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2025-60496?** 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 floating-point exception (FPE) occurs in the reframer_send_packet function when processing MP4 files with uninitialized or zero stream parameters (timescale, sample rate, or denominator values). The vulnerability is triggered by supplying a malformed MP4 file to MP4Box with operations like -split-size, causing an immediate crash via divide-by-zero. The fix sets a default denominator value of 1 to prevent the exception.

## Affected products

- GPAC Project MP4Box before 2.5

## Timeline

- 2025-09-08: disclosed
- 2025-09-09: patched

## References

- [https://github.com/gpac/gpac/commit/f03c946aae129980f0426d4cbae9746d0536fee6](https://github.com/gpac/gpac/commit/f03c946aae129980f0426d4cbae9746d0536fee6)
- [https://github.com/gpac/gpac/issues/3334](https://github.com/gpac/gpac/issues/3334)

## 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)