PatchTheCVEdnsserver vulnerabilities and fixes
Recent CVEs affecting dnsserver, with upgrade or downgrade steps. 1 tracked.
dnsserver has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-04-26. Highest priority: CVE-2026-42255 (score 33/100).
- CVE-2026-42255 HIGH 7.2 UPGRADE Technitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation.
FAQ
How do I fix dnsserver vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is dnsserver being exploited right now?
None of the tracked dnsserver CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which dnsserver CVE should I patch first?
CVE-2026-42255 currently ranks highest (33/100): Technitium DNS Server before 15.0 allows DNS traffic amplification via cyclic name server delegation..