CVE-2026-42255

FAUCET Score

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

First published: Apr 26, 2026Last modified: Apr 27, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		>= 0, < 15.0.0CPE match	cpe:2.3:a:technitium:dnsserver::::::::
		< 15.0CPE matchmatch criteria	cpe:2.3:a:technitium:dnsserver::::::::

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

LOW

Exploitability Score

3.9

Impact Score

2.7

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.21%

Probability of exploitation in next 30 days

EPSS Percentile

11.0%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0021 is in the 3rd percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / TechnitiumSoftware/DnsServer/blob/master/CHANGELOG.md

Release Notes