Input validation error in PowerDNS Recursor - CVE-2025-59030

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Main Vulnerability Database Vulnerabilities #VU119298

Input validation error in PowerDNS Recursor - CVE-2025-59030

Published: December 8, 2025


Vulnerability identifier: #VU119298
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-59030
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of incoming notifies over TCP. A remote attacker can send specially crafted requests to the DNS server and perform a denial of service (DoS) attack.


Affected software

PowerDNS Recursor
Debian Linux
Fedora
pdns-recursor (Debian package)
pdns-recursor

How to mitigate CVE-2025-59030

Install updates from vendor's website.

PowerDNS Recursor - addressed in versions 5.1.9, 5.2.7, 5.3.3
pdns-recursor (Debian package) - update to 5.2.7-0+deb13u1
pdns-recursor - addressed in versions 5.2.8-1.fc42, 5.2.8-1.fc43

External References

Related Security Bulletins