Denial of Service in Technitium DNS Server

Publication date: 2026-06-26

Last updated on: 2026-07-05

Assigner: MITRE

Description

An issue in Technitium DNS Server v.14.3 and before allows a remote attacker to cause a denial of service via the DnsServerApp.exe, DnsServerApp.dll, TechnitiumLibrary.Net/Dns/DnsClient.cs components

CVSS Scores

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Meta Information

Published

2026-06-26

Last Modified

2026-07-05

Generated

2026-07-17

AI Q&A

2026-06-27

EPSS Evaluated

2026-07-15

NVD

CVE-2026-36478

EUVD

EUVD-2026-39933

Affected Vendors & Products

Vendor	Product	Version / Range
technitium	technitium_dns_server	to 14.3 (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 exists in Technitium DNS Server version 14.3 and earlier. It allows a remote attacker to cause a denial of service (DoS) by exploiting components such as DnsServerApp.exe, DnsServerApp.dll, and TechnitiumLibrary.Net/Dns/DnsClient.cs.

Impact Analysis

The impact of this vulnerability is a denial of service condition, which means an attacker can disrupt the normal operation of the Technitium DNS Server, potentially making DNS services unavailable to users.

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