{"id":"CVE-2025-55640","title":"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.","summary":"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.","severity":"none","published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T18:07:54.649Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-55640","references":[{"url":"https://github.com/gpac/gpac/issues/3261"},{"url":"https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/25/25_poc.mp4"},{"url":"https://github.com/gpac/gpac/commit/321624f28d19a413449fd1718d1eb59037f8f7fc"},{"url":"https://infosec.exchange/@sigdevel/116769271709415444"}],"tags":["cve.org"],"ingestedAt":"2026-10-16T18:43:08.628Z","slug":"CVE-2025-55640","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}