Technitium DNS Server excessive DNSSEC requests_CVE-2026-45557

5.8 / 10

MEDIUM

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

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.

Basic Information

ID CVE-2026-45557

Source cisa-cg

Published May 19, 2026 at 13:47

Affected Product

Vendor Technitium

Product DNS Server

Affected Versions Technitium DNS Server 0

CWE Classification

CWE-405 CWE-406 CWE-770

References

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    "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.",
    "published": "2026-05-19T13:47:47.291Z",
    "modified": "2026-05-19T13:47:47.291Z",
    "type": "cve",
    "title": "Technitium DNS Server excessive DNSSEC requests",
    "source": "cisa-cg",
    "references": "https://github.com/TechnitiumSoftware/DnsServer/blo/master/CHANGELOG.md#version-150\nhttps://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-26-138-02.json\nhttps://www.cve.org/CVERecord?id=CVE-2026-45557",
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    "sourceData": "Technitium DNS Server 0",
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    "href": "",
    "category_name": "CVE",
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    "product": "DNS Server",
    "version": "0",
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