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.

CVSS v3 3.1 LOW

3.1^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.6 / Impact : 1.4

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:powerdns:dnsdist::::::::
	cpe:2.3:a:powerdns:dnsdist::::::::

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Un backend malicioso puede enviar una respuesta SVCB manipulada a una solicitud de Descubrimiento de Resolutores Designados, cuando se solicita a través de la opción autoUpgrade (Lua) para newServer o la configuración auto_upgrade (YAML). La actualización DDR no está habilitada por defecto.

Information

Published : 2026-04-22 14:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-33599

Mitre link : CVE-2026-33599

CVE.ORG link : CVE-2026-33599

JSON object : View

Products Affected

powerdns

dnsdist

CWE

CWE-125

Out-of-bounds Read

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