Vulnerability · Published Jul 21, 2025 · Assigned by OX
CVE-2025-30192A Recursor configured to send out ECS enabled queries can be sensitive to spoofing attempts
High 7.5
In plain English
A high-severity insufficient verification of data authenticity in Recursor from PowerDNS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.22 | pdns-recursor | 5.2.2-r0 | ALPINE-CVE-2025-30192 |
| Alpine:v3.23 | pdns-recursor | 5.2.5-r0 | ALPINE-CVE-2025-30192 |
| Alpine:v3.24 | pdns-recursor | 5.2.5-r0 | ALPINE-CVE-2025-30192 |
| Debian:12 | pdns-recursor | no fix listed | DEBIAN-CVE-2025-30192 |
| Debian:13 | pdns-recursor | 5.2.4-2 | DEBIAN-CVE-2025-30192 |
| Debian:14 | pdns-recursor | 5.2.4-2 | DEBIAN-CVE-2025-30192 |
| Ubuntu:24.04:LTS | pdns-recursor | no fix listed | UBUNTU-CVE-2025-30192 |
| Ubuntu:25.10 | pdns-recursor | no fix listed | UBUNTU-CVE-2025-30192 |
| Ubuntu:26.04:LTS | pdns-recursor | no fix listed | UBUNTU-CVE-2025-30192 |
| Ubuntu:26.10 | pdns-recursor | no fix listed | UBUNTU-CVE-2025-30192 |
Affected products (as reported)
Weakness: CWE-345 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H