CVE-2026-42255
High
Description
Technitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation.
SeverityHigh
CVSS7.2
Exploit probability—
ProductTechnitium Dnsserver
PublishedApr 26, 2026
First seenApr 26, 2026
Weakness typeCWE-684CWE-684
How to fix
Update
- technitium dnsserver15.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| technitium dnsserver | v < 15.0 | 15.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.