High severity · published Dec 9, 2025
CVE-2025-59030
Insufficient validation of incoming notifies over TCP can lead to a denial of service in Recursor
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
An attacker can trigger the removal of cached records by sending a NOTIFY query over TCP.
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)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RE
Recursor · PowerDNS
5.3.0 before 5.3.3; 5.2.0 before 5.2.7; 5.1.0 before 5.1.9 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-59030
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-59030
Vendor Advisory
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-08.html
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