CVE-2025-55651 Null dereference in n/a
Attackers can cause a Denial of Service in GPAC MP4Box by supplying a crafted MP4 file, triggering a NULL pointer dereference.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-55651?
CVE-2025-55651 is a medium-severity vulnerability in Gpac Gpac, published on 9 Jun 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A NULL pointer dereference in the gf_isom_get_user_data_count function (isomedia/isom_read.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.
Weakness: CWE-476
Which versions are affected by CVE-2025-55651?
It affects 1 product.
Products include Gpac Gpac.
How do I fix CVE-2025-55651?
No fix has been published for CVE-2025-55651 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-55651 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55651 exists.
Other vulnerabilities in Gpac Gpac
Sources
Also known as DEBIAN-CVE-2025-55651, GHSA-4wxp-p2xq-9854, UBUNTU-CVE-2025-55651.