CVE-2025-13502 Webkit: webkitgtk / wpe webkit: out-of-bounds read and integer underflow vulnerability leading to dos
An attacker can cause a denial of service in WebKitGTK applications by triggering an integer underflow and out-of-bounds read via a crafted payload to the GLib remote inspector server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-13502?
CVE-2025-13502 is a high-severity vulnerability in Red Hat Enterprise Linux 6, published on 25 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was found in WebKitGTK and WPE WebKit. This vulnerability allows an out-of-bounds read and integer underflow, leading to a UIProcess crash (DoS) via a crafted payload to the GLib remote inspector server.
Weakness: CWE-125
Which versions are affected by CVE-2025-13502?
How do I fix CVE-2025-13502?
Apply the vendor's patch.
Is CVE-2025-13502 being exploited?
There is no known exploitation of CVE-2025-13502 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-13502, GHSA-r6gx-fcg6-8hhj, UBUNTU-CVE-2025-13502.