CVE-2025-55653 Denial of service in n/a
A crafted MP4 file causes a division by zero in GPAC MP4Box, crashing the application and denying service to users.
- 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-2025-55653?
CVE-2025-55653 is a medium-severity denial of service vulnerability in n/a, published on 16 Oct 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
GPAC MP4Box v2.4 was discovered to contain a floating point exception in the gf_parse_lfrac function (utils/error.c). Processing a crafted MP4 file containing a zero-denominator fraction string causes gf_parse_lfrac() to divide by zero, terminating the process with SIGFPE.
Weakness: CWE-369
Which versions are affected by CVE-2025-55653?
How do I fix CVE-2025-55653?
No fix has been published for CVE-2025-55653 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-55653 being exploited?
There is no known exploitation of CVE-2025-55653 in the wild and no public exploit code.
Sources
Also known as GHSA-8r7h-84x7-5m9j, UBUNTU-CVE-2025-55653.