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PatchSiren cyber security CVE debrief

CVE-2025-55642 GPAC CVE debrief

A floating point exception was discovered in GPAC MP4Box v2.4 in the avidmx_process function (isomedia/isom_write.c). This vulnerability has a CVSS score of 6.5 and a severity of MEDIUM.

Vendor
GPAC
Product
MP4Box
CVSS
MEDIUM 6.5
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

The vulnerability is caused by a floating point exception in the avidmx_process function (isomedia/isom_write.c).

Defensive priority

MEDIUM

Recommended defensive actions

  • Update to a version of GPAC MP4Box that is not vulnerable.

Evidence notes

The CVE record was published on 2026-06-15T20:16:23.257Z and last modified on 2026-06-15T21:16:32.593Z.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-55642 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-55642

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

  • CVE-2025-55642 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-55642

    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.