CVE-2025-45663

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

CVSS v3.1 CNA

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

EPSS

0.37% chance of exploitation in the next 30 days, 29th percentile

Published

2025-11-03

Updated

2025-11-04

Proof-of-concept exploits (1)

• Fysac/netsurf-disclosure0★ · 2026-04-22

Security advisories

• Fysac/netsurf-disclosure/tree/main/CVE-2025-45663
• https://www.netsurf-browser.org

References

• CVE Record
• NVD entry

Related

• CVE-2019-20326
• CVE-2024-44625
• CVE-2024-51317
• CVE-2025-29699