CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-42255

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

Exploit prediction scoring system (EPSS) score

EPSS Score 0.002

EPSS Ranking 10.8%

CVSS Severity

CVSS v3 Score 7.2

References

https://github.com/TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md#technitium-dns-server-change-log

Products affected by CVE-2026-42255

Technitium » Dnsserver » Version: N/A

cpe:2.3:a:technitium:dnsserver:-
Technitium » Dnsserver » Version: 10.0

cpe:2.3:a:technitium:dnsserver:10.0
Technitium » Dnsserver » Version: 10.0.1

cpe:2.3:a:technitium:dnsserver:10.0.1
Technitium » Dnsserver » Version: 11.0

cpe:2.3:a:technitium:dnsserver:11.0
Technitium » Dnsserver » Version: 11.0.1

cpe:2.3:a:technitium:dnsserver:11.0.1
Technitium » Dnsserver » Version: 11.0.2

cpe:2.3:a:technitium:dnsserver:11.0.2
Technitium » Dnsserver » Version: 11.0.3

cpe:2.3:a:technitium:dnsserver:11.0.3
Technitium » Dnsserver » Version: 11.1

cpe:2.3:a:technitium:dnsserver:11.1
Technitium » Dnsserver » Version: 11.1.1

cpe:2.3:a:technitium:dnsserver:11.1.1
Technitium » Dnsserver » Version: 11.2

cpe:2.3:a:technitium:dnsserver:11.2
Technitium » Dnsserver » Version: 11.3

cpe:2.3:a:technitium:dnsserver:11.3
Technitium » Dnsserver » Version: 11.4

cpe:2.3:a:technitium:dnsserver:11.4
Technitium » Dnsserver » Version: 11.4.1

cpe:2.3:a:technitium:dnsserver:11.4.1
Technitium » Dnsserver » Version: 11.5

cpe:2.3:a:technitium:dnsserver:11.5
Technitium » Dnsserver » Version: 11.5.1

cpe:2.3:a:technitium:dnsserver:11.5.1
Technitium » Dnsserver » Version: 11.5.2

cpe:2.3:a:technitium:dnsserver:11.5.2
Technitium » Dnsserver » Version: 11.5.3

cpe:2.3:a:technitium:dnsserver:11.5.3
Technitium » Dnsserver » Version: 12.0

cpe:2.3:a:technitium:dnsserver:12.0
Technitium » Dnsserver » Version: 12.0.1

cpe:2.3:a:technitium:dnsserver:12.0.1
Technitium » Dnsserver » Version: 12.1

cpe:2.3:a:technitium:dnsserver:12.1
Technitium » Dnsserver » Version: 12.2

cpe:2.3:a:technitium:dnsserver:12.2
Technitium » Dnsserver » Version: 12.2.1

cpe:2.3:a:technitium:dnsserver:12.2.1
Technitium » Dnsserver » Version: 13.0

cpe:2.3:a:technitium:dnsserver:13.0
Technitium » Dnsserver » Version: 13.0.1

cpe:2.3:a:technitium:dnsserver:13.0.1
Technitium » Dnsserver » Version: 13.0.2

cpe:2.3:a:technitium:dnsserver:13.0.2
Technitium » Dnsserver » Version: 13.1

cpe:2.3:a:technitium:dnsserver:13.1
Technitium » Dnsserver » Version: 13.1.1

cpe:2.3:a:technitium:dnsserver:13.1.1
Technitium » Dnsserver » Version: 13.2

cpe:2.3:a:technitium:dnsserver:13.2
Technitium » Dnsserver » Version: 13.2.1

cpe:2.3:a:technitium:dnsserver:13.2.1
Technitium » Dnsserver » Version: 13.2.2

cpe:2.3:a:technitium:dnsserver:13.2.2
Technitium » Dnsserver » Version: 13.3

cpe:2.3:a:technitium:dnsserver:13.3
Technitium » Dnsserver » Version: 13.4

cpe:2.3:a:technitium:dnsserver:13.4
Technitium » Dnsserver » Version: 13.4.1

cpe:2.3:a:technitium:dnsserver:13.4.1
Technitium » Dnsserver » Version: 13.4.2

cpe:2.3:a:technitium:dnsserver:13.4.2
Technitium » Dnsserver » Version: 13.4.3

cpe:2.3:a:technitium:dnsserver:13.4.3
Technitium » Dnsserver » Version: 13.5

cpe:2.3:a:technitium:dnsserver:13.5
Technitium » Dnsserver » Version: 5.0

cpe:2.3:a:technitium:dnsserver:5.0
Technitium » Dnsserver » Version: 5.0.1

cpe:2.3:a:technitium:dnsserver:5.0.1
Technitium » Dnsserver » Version: 5.0.2

cpe:2.3:a:technitium:dnsserver:5.0.2
Technitium » Dnsserver » Version: 5.1

cpe:2.3:a:technitium:dnsserver:5.1
Technitium » Dnsserver » Version: 5.2

cpe:2.3:a:technitium:dnsserver:5.2
Technitium » Dnsserver » Version: 5.3

cpe:2.3:a:technitium:dnsserver:5.3
Technitium » Dnsserver » Version: 5.4

cpe:2.3:a:technitium:dnsserver:5.4
Technitium » Dnsserver » Version: 5.5

cpe:2.3:a:technitium:dnsserver:5.5
Technitium » Dnsserver » Version: 5.6

cpe:2.3:a:technitium:dnsserver:5.6
Technitium » Dnsserver » Version: 6.0

cpe:2.3:a:technitium:dnsserver:6.0
Technitium » Dnsserver » Version: 6.1

cpe:2.3:a:technitium:dnsserver:6.1
Technitium » Dnsserver » Version: 6.2

cpe:2.3:a:technitium:dnsserver:6.2
Technitium » Dnsserver » Version: 6.2.1

cpe:2.3:a:technitium:dnsserver:6.2.1
Technitium » Dnsserver » Version: 6.2.2

cpe:2.3:a:technitium:dnsserver:6.2.2
Technitium » Dnsserver » Version: 6.2.3

cpe:2.3:a:technitium:dnsserver:6.2.3
Technitium » Dnsserver » Version: 6.3

cpe:2.3:a:technitium:dnsserver:6.3
Technitium » Dnsserver » Version: 6.4

cpe:2.3:a:technitium:dnsserver:6.4
Technitium » Dnsserver » Version: 6.4.1

cpe:2.3:a:technitium:dnsserver:6.4.1
Technitium » Dnsserver » Version: 7.0

cpe:2.3:a:technitium:dnsserver:7.0
Technitium » Dnsserver » Version: 7.1

cpe:2.3:a:technitium:dnsserver:7.1
Technitium » Dnsserver » Version: 8.0

cpe:2.3:a:technitium:dnsserver:8.0
Technitium » Dnsserver » Version: 8.0.1

cpe:2.3:a:technitium:dnsserver:8.0.1
Technitium » Dnsserver » Version: 8.0.2

cpe:2.3:a:technitium:dnsserver:8.0.2
Technitium » Dnsserver » Version: 8.1

cpe:2.3:a:technitium:dnsserver:8.1
Technitium » Dnsserver » Version: 8.1.1

cpe:2.3:a:technitium:dnsserver:8.1.1
Technitium » Dnsserver » Version: 8.1.2

cpe:2.3:a:technitium:dnsserver:8.1.2
Technitium » Dnsserver » Version: 8.1.3

cpe:2.3:a:technitium:dnsserver:8.1.3
Technitium » Dnsserver » Version: 8.1.4

cpe:2.3:a:technitium:dnsserver:8.1.4
Technitium » Dnsserver » Version: 9.0

cpe:2.3:a:technitium:dnsserver:9.0
Technitium » Dnsserver » Version: 9.1

cpe:2.3:a:technitium:dnsserver:9.1

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-42255

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