# CVE-2025-30195: pdns-recursor: An attacker can publish a zone containing specific Resource Record Sets

CVE-2025-30195 is fixed in pdns-recursor on 1 platform, first by DEBIAN-CVE-2025-30195, released April 7, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-30195
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0079
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 7, 2025

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | pdns-recursor Debian 13.5 (trixie) | 5.2.1-1 | [DEBIAN-CVE-2025-30195](https://patchblox.com/security/data/fix/linux/debian-cve-2025-30195.md) | Apr 7, 2025 |
| Linux | pdns-recursor Debian 14 | 5.2.1-1 | [DEBIAN-CVE-2025-30195](https://patchblox.com/security/data/fix/linux/debian-cve-2025-30195.md) | Apr 7, 2025 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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