CVE-2025-30192 Affecting pdns-recursor package, versions <5.2.4-2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN13-PDNSRECURSOR-10881537
- published24 Jul 2025
- disclosed21 Jul 2025
Introduced: 21 Jul 2025
NewCVE-2025-30192 (opens in a new tab)How to fix?
Upgrade Debian:13 pdns-recursor to version 5.2.4-2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream pdns-recursor package and not the pdns-recursor package as distributed by Debian.
See How to fix? for Debian:13 relevant fixed versions and status.
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.