Vulnerability Details CVE-2026-33254
An attacker can create a large number of concurrent DoQ or DoH3 connections, causing unlimited memory allocation in DNSdist and leading to a denial of service. DOQ and DoH3 are disabled by default.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 30.8%
CVSS Severity
CVSS v3 Score 5.3
Products affected by CVE-2026-33254
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cpe:2.3:a:powerdns:dnsdist:2.0.0
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cpe:2.3:a:powerdns:dnsdist:2.0.1
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cpe:2.3:a:powerdns:dnsdist:2.0.2
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cpe:2.3:a:powerdns:dnsdist:2.0.3