CVE-2025-55640

— UNSCOREDpublic exploit available

Published 2026-10-16 · Updated 2026-10-17

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD 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.

Public exploit & PoC references

https://github.com/gpac/gpac/commit/321624f28d19a413449fd1718d1eb59037f8f7fc
https://github.com/gpac/gpac/issues/3261
https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/25/25_poc.mp4

All references

https://github.com/gpac/gpac/commit/321624f28d19a413449fd1718d1eb59037f8f7fc
https://github.com/gpac/gpac/issues/3261
https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/25/25_poc.mp4
https://infosec.exchange/@sigdevel/116769271709415444
http://www.openwall.com/lists/oss-security/2026/10/17/2

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.