{"id":"CVE-2025-55639","title":"GPAC MP4Box v2.4 was discovered to contain a NULL pointer dereference in the gf_isom_add_track_kind() function at isomedia/isom_write.c","summary":"GPAC MP4Box v2.4 was discovered to contain a NULL pointer dereference in the gf_isom_add_track_kind() function at isomedia/isom_write.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted MP4 file.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"gpac","product":"gpac","affected":["gpac < 26.02.0"],"patched":["gpac 26.02.0"],"published":"2026-06-23","updated":"2026-10-05","sourceUpdated":"2026-10-05T16:10:00.443","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-55639","references":[{"url":"https://github.com/gpac/gpac/commit/027ce139dda498ee95df36db9f9f6f3cadce8ec9","label":"cve@mitre.org"},{"url":"https://github.com/gpac/gpac/issues/3260","label":"cve@mitre.org"},{"url":"https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/23/23_poc.mp4","label":"cve@mitre.org"},{"url":"https://infosec.exchange/@sigdevel/116769184815236865","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/06/26/2","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/gpac/gpac/issues/3260","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00511,"epssPercentile":0.41522,"ingestedAt":"2026-10-05T16:25:58.379Z","slug":"CVE-2025-55639","body":"## Overview\n\nGPAC MP4Box v2.4 was discovered to contain a NULL pointer dereference in the gf_isom_add_track_kind() function at isomedia/isom_write.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted MP4 file.\n\n## Affected\n\n- `gpac < 26.02.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `gpac 26.02.0`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}