CVE-2025-30192

A Recursor configured to send out ECS enabled queries can be sensitive to spoofing attempts

CVSS 7.5 HIGHEPSS 0.2%CWE-345

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.5EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

21 Jul 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

PowerDNS · Recursor

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References

https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-04.html