CVE-2025-55639: Gpac

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Gpac Gpac: before 26.02.0 (fixed in 26.02.0)

Published 2026-06-23. Last modified 2026-10-05.