CVE-2026-33599

LOW

3.1

Description

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.

CVE Details

CVSS v3.1 Score3.1

SeverityLOW

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

Attack VectorADJACENT_NETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published4/22/2026

Last Modified4/22/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-125

References

https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html(security@open-xchange.com)

IOC Correlations

No correlations recorded

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