All vulnerabilities

Servers and applications

CVE-2022-3204

A vulnerability named 'Non-Responsive Delegation Attack' (NRDelegation Attack) has been discovered in various DNS resolving software. The NRDelegation Attack works by having a malicious delegation with a considerable number of non responsive nameservers. The attack starts by querying a resolver for a record that relies on those unresponsive nameservers. The attack can cause a resolver to spend a…

Severity
High 7.5
Published
26 Sept 2022
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
UnboundServers and applications · cpe:a:nlnetlabs:unbound
  • Every version up to 1.16.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2022-3204
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2022-3204