CVE-2025-55639
Medium
Description
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductGpac
PublishedJun 23, 2026
First seenJun 23, 2026
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- gpac gpac26.02.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gpac gpac | v < 26.02.0 | 26.02.0 |
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