DNS cache poisoning in PowerDNS Recursor



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2025-30192
CWE-ID CWE-349
Exploitation vector Network
Public exploit N/A
Vulnerable software
 PowerDNS Recursor
Server applications / DNS servers

Vendor PowerDNS.COM B.V.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Acceptance of Extraneous Untrusted Data With Trusted Data

EUVDB-ID: #VU113094

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-30192

CWE-ID: CWE-349 - Acceptance of Extraneous Untrusted Data With Trusted Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cache poisoning attacks.

The vulnerability exists due to an error in ECS implementation. A remote attacker can spoof answers to ECS enabled requests sent out by the Recursor.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PowerDNS Recursor: 5.0.0 alpha1 - 5.3.0 alpha2

CPE2.3 External links

https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-04.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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