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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
2026-06-16
Advisory published
2026-06-15
Advisory updated
2026-06-16

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.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-55649 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-55649

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-55649 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-55649

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.