CVE-2025-55651

CVSS 5.5 MEDIUMEPSS 0.2%CWE-476

Vexday Risk Score

33Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 5.5EPSS 0.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

09 Jun 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

n/a · n/a

public PoCs found — 1

cve_referencegithub.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/4/4_poc.mp4unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/4/4_poc.mp4 https://infosec.exchange/@sigdevel/116710512103919834 http://www.openwall.com/lists/oss-security/2026/06/13/18