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.
History

Wed, 22 Apr 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Powerdns
Powerdns dnsdist
Vendors & Products Powerdns
Powerdns dnsdist

Wed, 22 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 22 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
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.
Title Out-of-bounds read in service discovery
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: OX

Published:

Updated: 2026-04-22T14:50:22.629Z

Reserved: 2026-03-23T12:57:56.814Z

Link: CVE-2026-33599

cve-icon Vulnrichment

Updated: 2026-04-22T14:50:08.809Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-22T14:16:54.410

Modified: 2026-04-22T21:23:52.620

Link: CVE-2026-33599

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-22T20:30:26Z