PowerDNS DNSdist fixes a high-severity vulnerability

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[TLP:CLEAR] PowerDNS DNSdist fixes a high-severity vulnerability

PowerDNS DNSdist version 1.9.10 fixes a high-severity vulnerability [1].

PowerDNS DNSdist - DoS (CVE-2025-30193)

CVSS 7.5 (High)

An unauthenticated remote attacker can, under certain conditions, perform a DoS attack on DNSdist [1]. If an immediate update to the fixed version is not possible, the recommended workaround is to limit the maximum number of queries per incoming TCP connection to a safe value, for example 50, by setting 'setMaxTCPQueriesPerConnection()'.

The vulnerability is present in product:

*:PowerDNS DNSdist; <=1.9.9;

CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

More information:

CVE-2025-30193 at cve.org, NVD
CWE-674: Uncontrolled Recursion at cwe.mitre.org

The vulnerability was publicly disclosed 20. 5. 2025.

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[TLP:CLEAR] PowerDNS DNSdist fixes a high-severity vulnerability

PowerDNS DNSdist - DoS (CVE-2025-30193)

CVSS 7.5 (High)

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