CVE-2026-45557

Technitium DNS Server excessive DNSSEC requests

MEDIUM
5.8
CVSS Score
Published: May 19, 2026 at 01:47 PM UTC
Updated: July 24, 2026 at 12:23 PM UTC
1 product affected across 1 vendorDNS Server

Using DNS Server by Technitium?

Get instant alerts when new vulnerabilities affect DNS Server - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM5.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 15.0
Vendor states this is fixed in 15.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.8MEDIUMcisa-cg
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-405CWE-406CWE-770

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card