---
id: CVE-2025-50334
title: >-
  An issue in Technitium DNS Server v.13.5 allows a remote attacker to cause a
  denial of service via the rate-limiting component
summary: >-
  An issue in Technitium DNS Server v.13.5 allows a remote attacker to cause a
  denial of service via the rate-limiting component
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-770
  - CWE-770
vendor: technitium
product: dnsserver
affected:
  - dnsserver < 14.0
patched:
  - dnsserver 14.0
published: '2026-01-08'
updated: '2026-06-30'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-50334'
references:
  - url: 'http://technitium.com'
    label: cve@mitre.org
  - url: 'https://github.com/FPokerFace/Security-Advisory/tree/main/CVE-2025-50334'
    label: cve@mitre.org
  - url: 'https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md'
    label: cve@mitre.org
  - url: >-
      https://github.com/TechnitiumSoftware/DnsServer/blob/v13.3/DnsServerCore/Dns/DnsServer.cs
    label: cve@mitre.org
  - url: >-
      https://github.com/TechnitiumSoftware/DnsServer/commit/7229b217238213cc6275eea68a7e17d73df1603e
    label: cve@mitre.org
  - url: 'https://access.redhat.com/security/cve/CVE-2025-50334'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2428058'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-50334.json
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
tags:
  - nvd
epss: 0.01085
epssPercentile: 0.63833
ingestedAt: '2026-06-30T13:26:50.245Z'
---

## Overview

An issue in Technitium DNS Server v.13.5 allows a remote attacker to cause a denial of service via the rate-limiting component

## Affected

- `dnsserver < 14.0`

## Remediation

Upgrade past the affected range:

- `dnsserver 14.0`