CVE-2025-55640

medium

Description

A heap buffer overflow in the stbl_AddSize function (isomedia/stbl_write.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

References

https://infosec.exchange/@sigdevel/116769271709415444

https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/25/25_poc.mp4

https://github.com/gpac/gpac/issues/3261

https://github.com/gpac/gpac/commit/321624f28d19a413449fd1718d1eb59037f8f7fc

https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-211111

http://www.openwall.com/lists/oss-security/2026/10/17/2

Details

Source: Mitre, NVD

Published: 2026-10-16

Updated: 2026-10-17

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 5.5

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