CVE-2025-30195

HIGH

PowerDNS Recursor >=5.2.0 <5.2.1 - Denial of Service via Malicious Zone Resource Record Sets

Title source: llm

Description

An attacker can publish a zone containing specific Resource Record Sets. Processing and caching results for these sets can lead to an illegal memory accesses and crash of the Recursor, causing a denial of service. The remedy is: upgrade to the patched 5.2.1 version. We would like to thank Volodymyr Ilyin for bringing this issue to our attention.

References (2)

Core 2

Core References

Various Sources

https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-01.html

Mailing List

http://www.openwall.com/lists/oss-security/2025/04/07/1

Scores

CVSS v3 7.5

EPSS 0.0064

EPSS Percentile 45.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-476

Status published

Products (1)

PowerDNS/Recursor 5.2.0

Published Apr 07, 2025

Tracked Since Feb 18, 2026