Vulnerability · Published Nov 3, 2025 · Assigned by mitre
CVE-2025-45663
Medium 6.5
In plain English
A medium-severity security flaw in the netsurf package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 69.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An issue in NetSurf v3.11 causes the application to read uninitialized heap memory when creating a dom_event structure.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | netsurf | no fix listed | DEBIAN-CVE-2025-45663 |
| Debian:13 | netsurf | no fix listed | DEBIAN-CVE-2025-45663 |
| Debian:14 | netsurf | no fix listed | DEBIAN-CVE-2025-45663 |
| Ubuntu:22.04:LTS | netsurf | no fix listed | UBUNTU-CVE-2025-45663 |
| Ubuntu:24.04:LTS | netsurf | no fix listed | UBUNTU-CVE-2025-45663 |
| Ubuntu:25.10 | netsurf | no fix listed | UBUNTU-CVE-2025-45663 |
| Ubuntu:26.04:LTS | netsurf | no fix listed | UBUNTU-CVE-2025-45663 |
| Ubuntu:26.10 | netsurf | no fix listed | UBUNTU-CVE-2025-45663 |
Affected products (as reported)
Weakness: CWE-244 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L