TCP Proxy Request Handling Flaw in Open-Xchange

Publication date: 2026-05-21

Last updated on: 2026-05-26

Assigner: Open-Xchange

Description

Incorrect Behaviour of Views with TCP PROXY Requests

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-2026-41999

EUVD

EUVD-2026-31262

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This vulnerability involves incorrect behaviour of views when handling TCP PROXY requests. It means that the system does not properly process or interpret TCP PROXY protocol data, which can lead to unexpected or unintended behaviour.

Impact Analysis

The vulnerability has a CVSS base score of 4.8, indicating a medium severity impact. It can lead to limited confidentiality and integrity issues, meaning some data might be exposed or altered. However, it does not affect availability.

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