CVE-2025-55659

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% 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 ctts_box_write function (isomedia/box_code_base.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/116710743410087676
http://www.openwall.com/lists/oss-security/2026/06/13/17

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