CVE-2025-45663 Information disclosure in n/a

Medium 6.5 Published 3 Nov 2025 Updated 4 Nov 2025

An attacker can read uninitialized heap memory in NetSurf, potentially exposing sensitive data.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-45663?

CVE-2025-45663 is a medium-severity vulnerability in n/a, published on 3 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue in NetSurf v3.11 causes the application to read uninitialized heap memory when creating a dom_event structure.

Weakness: CWE-244

Which versions are affected by CVE-2025-45663?

It affects 1 product.

Products include Netsurf-Browser Netsurf.

How do I fix CVE-2025-45663?

No fix has been published for CVE-2025-45663 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-45663 being exploited?

There is no known exploitation of CVE-2025-45663 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2025-45663, GHSA-8m64-p66f-h4hv, UBUNTU-CVE-2025-45663.