CVE-2025-45663 — MEDIUM (6.5)

Vulnerability Description

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

CVSS Score

6.5

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

LOW

Affected Products

Vendor	Product	Versions
Netsurf-Browser	Netsurf	3.11

Related Weaknesses (CWE)

CWE-244

References

https://github.com/Fysac/netsurf-disclosure/tree/main/CVE-2025-45663ExploitThird Party Advisory
https://www.netsurf-browser.org/Product

FAQ

What is CVE-2025-45663?

CVE-2025-45663 is a vulnerability with a CVSS score of 6.5 (MEDIUM). An issue in NetSurf v3.11 causes the application to read uninitialized heap memory when creating a dom_event structure.

How severe is CVE-2025-45663?

CVE-2025-45663 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-45663?

Check the references section above for vendor advisories and patch information. Affected products include: Netsurf-Browser Netsurf.