CVE-2026-36478 Denial of service in n/a
A remote attacker can cause a denial of service in Technitium DNS Server via specific application components.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-36478?
CVE-2026-36478 is a high-severity denial of service vulnerability in n/a, published on 26 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue in Technitium DNS Server v.14.3 and before allows a remote attacker to cause a denial of service via the DnsServerApp.exe, DnsServerApp.dll, TechnitiumLibrary.Net/Dns/DnsClient.cs components
Weakness: CWE-400
Which versions are affected by CVE-2026-36478?
How do I fix CVE-2026-36478?
No fix has been published for CVE-2026-36478 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-36478 being exploited?
There is no known exploitation of CVE-2026-36478 in the wild and no public exploit code.
Sources
Also known as GHSA-fq83-8h88-7gf5.