Description
An issue in NetSurf v3.11 causes the application to read uninitialized heap memory when creating a dom_event structure.
Affected products
netsurf-browser: netsurf
References2
- github.com/Fysac/netsurf-disclosure/tree/main/CVE-2025-45663 ExploitThird Party Advisory
- www.netsurf-browser.org/ Product
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - EPSS — exploit probability
- 0% percentile: 31 · as of 10 November 2026
- CWE
- CWE-244
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.