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Vulnerability record · CVE-2025-50334 · published 8 January 2026

CVE-2025-50334: Technitium dnsserver allocation without limits vulnerability

Technitium · Dnsserver

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

7.5 CVSS 3.1 High EPSS 1.1% · top 36.1% CWE-770 · Allocation without limits
7.5CVSS 3.1 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
7References, 1 tagged exploit
15 Jul 2026Last modified by NVD

Description

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/FPokerFace/Security-Advisory/tree/main/CVE-2025-50334 ExploitThird Party Advisory
https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md Release Notes
https://github.com/TechnitiumSoftware/DnsServer/blob/v13.3/DnsServerCore/Dns/DnsServer.cs Product
https://github.com/TechnitiumSoftware/DnsServer/commit/7229b217238213cc6275eea68a7e17d73df1603e Patch
https://access.redhat.com/security/cve/CVE-2025-50334
https://bugzilla.redhat.com/show_bug.cgi?id=2428058
https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-50334.json

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2024-56089Technitium dnsserver vulnerabilityAn issue in Technitium through v13.2.2 enables attackers to conduct a DNS cache poisoning attack and inject fake responses by reviving the birthday a…EPSS 0.32%7.5CVE-2023-28455Technitium dnsserver vulnerabilityAn issue was discovered in Technitium through 11.0.2. The forwarding mode enables attackers to create a query loop using Technitium resolvers, launch…EPSS 0.53%7.5CVE-2023-28456Technitium dnsserver vulnerabilityAn issue was discovered in Technitium through 11.0.2. It enables attackers to launch amplification attacks (3 times more than other "golden model" so…EPSS 0.54%7.5CVE-2023-28457Technitium dnsserver insufficient verification of data authenticity vulnerabilityAn issue was discovered in Technitium through 11.0.3. It enables attackers to conduct a DNS cache poisoning attack and inject fake responses within 1…EPSS 0.21%7.5CVE-2023-49203Technitium dnsserver vulnerabilityTechnitium 11.5.3 allows remote attackers to cause a denial of service (bandwidth amplification) because the DNSBomb manipulation causes accumulation…EPSS 0.65%7.5CVE-2023-28451Technitium dnsserver uncontrolled resource consumption vulnerabilityAn issue was discovered in Technitium 11.0.2. There is a vulnerability (called BadDNS) in DNS resolving software, which triggers a resolver to ignore…EPSS 0.53%6.5CVE-2026-42255Technitium dnsserver vulnerabilityTechnitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation.EPSS 0.35%5.3CVE-2024-56946Technitium dnsserver vulnerabilityDenial of service in DNS-over-QUIC in Technitium DNS Server <= v13.2.2 allows remote attackers to permanently stop the server from accepting new DNS-…EPSS 0.45%

Source: NIST National Vulnerability Database (record CVE-2025-50334), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.