Technitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Technitium
  • Dnsserver

No data.

No data.

References
Link Providers
https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#technitium-dns-server-change-log cve-icon cve-icon
History

Sun, 26 Apr 2026 04:15:00 +0000

Type Values Removed Values Added
Description Technitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation.
First Time appeared Technitium
Technitium dnsserver
Weaknesses CWE-684
CPEs cpe:2.3:a:technitium:dnsserver:*:*:*:*:*:*:*:*
Vendors & Products Technitium
Technitium dnsserver
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L'}
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-04-26T03:10:30.349Z

Reserved: 2026-04-26T02:48:44.278Z

Link: CVE-2026-42255

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-26T04:16:05.787

Modified: 2026-04-26T04:16:05.787

Link: CVE-2026-42255

cve-icon Redhat

No data.