# CVE-2026-42255

> Vulnerability · severity: **HIGH** (CVSS 7.2).

## Description

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

## Key facts

- **CVE ID:** CVE-2026-42255
- **Published:** 2026-04-26
- **CVSS severity:** HIGH
- **CVSS base score:** 7.2
- **CWE codes:** CWE-684

## Affected products

- `technitium:dnsserver`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-42255

## Citation

> AI Analytics. CVE-2026-42255. Retrieved 2026-07-20 from https://api.ai-analytics.org/cve/CVE-2026-42255. Derived from NIST NVD. Licensed CC0.

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