Denial of Service Vulnerability in PowerDNS Recursor by PowerDNS

CVE-2025-30195

What is CVE-2025-30195?

A vulnerability exists in PowerDNS Recursor wherein an attacker may exploit it by publishing a zone with specific Resource Record Sets. This exploitation can trigger illegal memory accesses, which can result in the Recursor crashing. Consequently, this leads to a denial of service condition. To mitigate this vulnerability, users are advised to upgrade to the patched version 5.2.1. We acknowledge Volodymyr Ilyin for his contribution in identifying this issue.

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