CVE-2025-51602 Denial of service in VLC media player
An attacker can cause a denial of service in VLC media player by sending a crafted response from an MMS server, triggering an out-of-bounds read.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-51602?
CVE-2025-51602 is a medium-severity denial of service vulnerability in VideoLAN VLC media player, published on 16 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
mmstu.c in VideoLAN VLC media player before 3.0.22 allows an out-of-bounds read and denial of service via a crafted 0x01 response from an MMS server.
Weakness: CWE-125
Which versions are affected by CVE-2025-51602?
How do I fix CVE-2025-51602?
Upgrade to a fixed version.
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-2025-51602 being exploited?
There is no known exploitation of CVE-2025-51602 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-51602, DLA-4507-1, DSA-6082-1, GHSA-5fj6-q8x2-56g8, UBUNTU-CVE-2025-51602.