CVE-2025-55651

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-06-09 · updated 2026-07-23
Weakness: CWE-476

Description

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.

Affected products

GPAC: 2.4

References

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

Get alerted when CVE-2025-55651 or the next vulnerability affects your stack