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.

Classification

CVE ID: CVE-2025-30195

CVSS Base Severity: HIGH

CVSS Base Score: 7.5

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

Affected Products

Vendor: PowerDNS

Product: Recursor

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 4.8% (scored less or equal to compared to others)

EPSS Date: 2025-04-22 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-30195
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-01.html

Timeline