Vulnerability Details CVE-2026-33599
A rogue backend can send a crafted SVCB response to a Discovery of Designated Resolvers request, when requested via either the autoUpgrade (Lua) option to newServer or auto_upgrade (YAML) settings. DDR upgrade is not enabled by default.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 20.6%
CVSS Severity
CVSS v3 Score 3.1
Products affected by CVE-2026-33599
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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