High severity · published Jul 21, 2025
CVE-2025-30192
A Recursor configured to send out ECS enabled queries can be sensitive to spoofing attempts
7.5
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RE
Recursor · PowerDNS
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-30192
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-30192
docs.powerdns.com
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-04.html
More from Recursor
9.8
CVE-2019-3807
An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not…
8.8
CVE-2020-10030
An issue has been found in PowerDNS Recursor 4.1.0 up to and including 4.3.0
8.2
CVE-2025-59023
Crafted delegations or IP fragments can poison cached delegations in Recursor
8.1
CVE-2019-3806
An issue has been found in PowerDNS Recursor versions after 4.1.3 before 4.1.9 where Lua hooks are not properly applied to queries received over TCP in some specific combination…
7.5
CVE-2026-52688
RRSIGs with too few labels can lead to bypass of DNSSEC wildcard validation