Insufficient Validation of Autoprimary SOA Queries in Open-Xchange

Publication date: 2026-05-21

Last updated on: 2026-05-26

Assigner: Open-Xchange

Description

Insufficient Validation of Autoprimary SOA Queries

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-05-21

Last Modified

2026-05-26

Generated

2026-06-30

AI Q&A

2026-05-21

EPSS Evaluated

2026-06-29

NVD

CVE-2026-42001

EUVD

EUVD-2026-31259

Affected Vendors & Products

Vendor	Product	Version / Range
powerdns	authoritative	From 5.0.0 (inc) to 5.0.5 (exc)
powerdns	authoritative	From 4.1.0 (inc) to 4.9.15 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

This vulnerability involves insufficient validation of autoprimary SOA (Start of Authority) queries. Essentially, the system does not properly verify certain DNS-related queries, which can lead to potential issues.

Impact Analysis

The vulnerability has a CVSS v3.1 base score of 7.5 with the vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, indicating that it can be exploited remotely without privileges or user interaction and can cause a high impact on availability. This means an attacker could potentially disrupt service availability.

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