# CVE-2025-30192: pdns-recursor: An attacker spoofing answers to ECS enabled requests sent out by the Recursor has a chance of success higher than non...

CVE-2025-30192 is fixed in pdns-recursor on 1 platform, first by DEBIAN-CVE-2025-30192, released July 21, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-30192
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0027
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 21, 2025

## Description

An attacker spoofing answers to ECS enabled requests sent out by the Recursor has a chance of success higher than non-ECS enabled queries.  The updated version include various mitigations against spoofing attempts of ECS enabled queries by chaining ECS enabled requests and enforcing stricter validation of the received answers.  The most strict mitigation done when the new setting outgoing.edns_subnet_harden (old style name edns-subnet-harden) is enabled.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | pdns-recursor Debian 13.5 (trixie) | 5.2.4-2 | [DEBIAN-CVE-2025-30192](https://patchblox.com/security/data/fix/linux/debian-cve-2025-30192.md) | Jul 21, 2025 |
| Linux | pdns-recursor Debian 14 | 5.2.4-2 | [DEBIAN-CVE-2025-30192](https://patchblox.com/security/data/fix/linux/debian-cve-2025-30192.md) | Jul 21, 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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