CVE-2021-28300: Gpac

Critical severity, CVSS 9.8. EPSS: 2.1% chance of exploitation in the next 30 days.

NULL Pointer Dereference in the "isomedia/track.c" module's "MergeTrack()" function of GPAC v0.5.2 allows attackers to execute arbitrary code or cause a Denial-of-Service (DoS) by uploading a malicious MP4 file.

Affected products

• Gpac Gpac: version 0.5.2 only

Published 2021-04-14. Last modified 2026-06-17.