CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
2DescriptionNVD
A rogue primary server may cause file descriptor exhaustion and eventually a denial of service, when a PowerDNS secondary server forwards a DNS update request to it.
AnalysisAI
Denial of service in PowerDNS secondary servers occurs when a rogue primary server sends crafted DNS update requests that cause file descriptor exhaustion on the secondary, eventually rendering the secondary unable to process legitimate DNS queries. The attack requires network-level coordination between a compromised or attacker-controlled primary server and a target secondary server, with moderate attack complexity due to the need to establish a primary-secondary relationship. …
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-24949
GHSA-7rv6-r2fm-295c