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Fencer Vulns
high 7.5

CVE-2025-30192 json

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

published 2025-07-21 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-22089

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits
0
none known

Summary

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.

Patch / fix

  • PowerDNS Recursor 5.0.12, 5.1.6, 5.2.4
  • pdns-recursor Debian 14, Debian 13 5.2.4-2

debian advisories DEBIAN-CVE-2025-30192

  • pdns-recursor openSUSE Tumbleweed 5.2.5-1.1

opensuse advisories openSUSE-SU-2025:15478-1

  • pdns-recursor Alpine 3.22 5.2.2-r0
  • pdns-recursor Alpine 3.24, Alpine 3.23 5.2.5-r0

alpine advisories ALPINE-CVE-2025-30192

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-30192 updated cvss 5.3

pdns-recursor: A Recursor configured to send out ECS enabled queries can be sensitive to spoofing attempts

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
15 mo ago

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • PowerDNS Recursor

Classification

Weakness
  • CWE-345 Insufficient Verification of Data Authenticity

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.