CVE-2025-66287 Webkitgtk: processing maliciously crafted web content may lead to an unexpected process crash
Attackers can cause an unexpected process crash in WebKitGTK by processing malicious web content due to improper memory handling.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-66287?
CVE-2025-66287 is a high-severity memory corruption vulnerability in Red Hat Enterprise Linux 6, published on 4 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due to improper memory handling.
Weakness: CWE-120
Which versions are affected by CVE-2025-66287?
How do I fix CVE-2025-66287?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-66287 being exploited?
There is no known exploitation of CVE-2025-66287 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-66287, GHSA-f6mf-j487-747p, UBUNTU-CVE-2025-66287.