CVE catalog

CVE-2025-45663

netsurf: CVE-2025-45663

Severity: Medium · CVSS 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Published: Nov 3, 2025, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.37% · Oct 25, 2026

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

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	netsurf	sid	`3.11-4`	vulnerable
Debian	netsurf	forky	`3.11-4`	vulnerable
Debian	netsurf	trixie	`3.11-2`	vulnerable
Debian	netsurf	bookworm	`3.10-1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	netsurf	source	sid	`(unfixed)`	not yet assigned	Not reported	[1119918]
Debian	netsurf	source	forky	`(unfixed)`	not yet assigned	Not reported	[1119918]
Debian	netsurf	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1119918]
Debian	netsurf	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1119918]

[Debian bug #1119918]

Notes

[trixie] netsurf: Minor issue [bookworm] netsurf: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[netsurf-common]Affected
Source package: [netsurf]
Details (2)
- 3.10-1 · all · bookworm
  Affected
  dsa · netsurf · debian · bookworm; dsa · netsurf · debian · 12
- 3.10-1 · all · bookworm
  Affected
  dsa · netsurf · debian · bookworm; dsa · netsurf · debian · 12
[netsurf-fb]Affected
Source package: [netsurf]
Details (2)
- 3.10-1+b3 · amd64 · bookworm
  Affected
  dsa · netsurf · debian · bookworm; dsa · netsurf · debian · 12
- 3.10-1+b3 · arm64 · bookworm
  Affected
  dsa · netsurf · debian · bookworm; dsa · netsurf · debian · 12
[netsurf-gtk]Affected
Source package: [netsurf]
Details (2)
- 3.10-1+b3 · amd64 · bookworm
  Affected
  dsa · netsurf · debian · bookworm; dsa · netsurf · debian · 12
- 3.10-1+b3 · arm64 · bookworm
  Affected
  dsa · netsurf · debian · bookworm; dsa · netsurf · debian · 12

[Debian 13 (Trixie)]

[netsurf-common]Affected
Source package: [netsurf]
Details (2)
- 3.11-2 · all · trixie
  Affected
  dsa · netsurf · debian · 13
- 3.11-2 · all · trixie
  Affected
  dsa · netsurf · debian · 13
[netsurf-fb]Affected
Source package: [netsurf]
Details (2)
- 3.11-2 · amd64 · trixie
  Affected
  dsa · netsurf · debian · 13
- 3.11-2+b1 · arm64 · trixie
  Affected
  dsa · netsurf · debian · 13
[netsurf-gtk]Affected
Source package: [netsurf]
Details (2)
- 3.11-2 · amd64 · trixie
  Affected
  dsa · netsurf · debian · 13
- 3.11-2+b1 · arm64 · trixie
  Affected
  dsa · netsurf · debian · 13

Observed: Oct 24, 2026, 4:53:10 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]