CVE-2026-45557

5.8 MEDIUM

Published: May 19, 2026 Modified: May 19, 2026

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://github.com/TechnitiumSoftware/DnsServer/blo/master/CHANGELOG.md#version-150

Source: 9119a7d8-5eab-497f-8521-727c672e3725

https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-26-138-02.json

Source: 9119a7d8-5eab-497f-8521-727c672e3725

https://www.cve.org/CVERecord?id=CVE-2026-45557

Source: 9119a7d8-5eab-497f-8521-727c672e3725

3 reference(s) from NVD

Quick Stats

CVSS v3 Score

5.8 / 10.0

EPSS (Exploit Probability)

0.4%

31th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-405 CWE-406 CWE-770

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