CVE-2026-45557 MEDIUM

CVE-2026-45557: Technitium DNS Server excessive DNSSEC requests

Vendor Technitium
Product DNS Server
Weakness CWE-405
Published May 19, 2026
Last update May 19, 2026
View on NVD All CVEs

CVSS base score

5.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Technitium DNS Server aggressively tries to fetch missing RRSIG records or mismatched DNSKEY records. An attacker in control of a domain can cause a vulnerable system to generate excessive network traffic. Fixed in 15.0.

Key dates

02Disclosure timeline

May 19, 2026 CVE published
May 19, 2026 Record updated