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No exploitation reported

CVE-2025-45663

No exploitation reported by the sources we read.

  • Published2025-11-03
  • WeaknessCWE-244

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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

Timeline

dates in UTC
  1. 2025-11-0315:15CVE publishedNVD

Versions per branch

NVD
Netsurf-browser netsurf
BranchAffectedFixed in
3.11= 3.11no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • netsurfUbuntu:26.10all versions · no fixed version listed
  • netsurfUbuntu:26.04:LTSall versions · no fixed version listed
  • netsurfUbuntu:25.10all versions · no fixed version listed
  • netsurfUbuntu:24.04:LTSall versions · no fixed version listed
  • netsurfUbuntu:22.04:LTSall versions · no fixed version listed
  • netsurfUbuntu:20.04:LTSall versions · no fixed version listed
  • netsurfUbuntu:16.04:LTSall versions · no fixed version listed
  • netsurfDebian:14all versions · no fixed version listed

2 more package ranges on OSV.dev

Vendor advisories

  • CVE-2025-45663 Red Hat Product Security

    netsurf: NetSurf uninitialized memory access

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Published
2025-11-03
Last Modified
2026-11-05
NVD status
Analyzed
GitHub Advisory
GHSA-8m64-p66f-h4hv

Frequently asked questions

What is CVE-2025-45663?

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

Is CVE-2025-45663 actively exploited?

Active exploitation of CVE-2025-45663 has not been confirmed. Its EPSS score was 0.4% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-45663?

CVE-2025-45663 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.

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Sources for this record