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.
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
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| pdns-recursor · Debian 13.5 (trixie) | 5.2.4-2 | DEBIAN-CVE-2025-30192 | Jul 21, 2025 |
| pdns-recursor · Debian 14 | 5.2.4-2 | DEBIAN-CVE-2025-30192 | Jul 21, 2025 |
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