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PatchSiren cyber security CVE debrief

CVE-2025-55649 GPAC CVE debrief

CVE-2025-55649 is a medium-severity vulnerability in GPAC MP4Box v2.4. A NULL pointer dereference in the gf_media_map_esd function (media_tools/isom_tools.c) allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file. The CVSS score for this vulnerability is 5.5.

Vendor
GPAC
Product
MP4Box
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-15
Original CVE updated
2026-06-15
Advisory published
2026-06-15
Advisory updated
2026-06-15

Who should care

Users of GPAC MP4Box v2.4 should be aware of this vulnerability and take steps to mitigate it.

Technical summary

A NULL pointer dereference in the gf_media_map_esd function (media_tools/isom_tools.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

Defensive priority

medium

Recommended defensive actions

  • Update to a patched version of GPAC MP4Box if available.
  • Be cautious when handling MP4 files from untrusted sources.

Evidence notes

The CVE record was published on 2026-06-15T20:16:23.923Z and last modified on 2026-06-15T21:16:35.667Z.

Official resources

CVE-2025-55649 was published on 2026-06-15T20:16:23.923Z.