Vulnerability in Netsurf-browser Netsurf

CVE-2025-45663

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

EPSS: 0.003 (26.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.

Affected products

Netsurf-browser Netsurf — versions 3.11
N/a — versions n/a

Weakness classification (CWE)

CWE-244

References

cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org (Product)

Frequently asked questions

What is CVE-2025-45663?: CVE-2025-45663 is a medium-severity vulnerability in Netsurf-browser Netsurf, classified under CWE-244. CVSS score: 6.5/10. Published 2025-11-03.
How severe is CVE-2025-45663?: Medium severity. CVSS v3 base score is 6.5 out of 10.