Bug 2493792 (CVE-2026-36478)

Summary: CVE-2026-36478 Technitium DNS Server: Technitium DNS Server: Denial of Service vulnerability via specific components
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerability-draftAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Technitium DNS Server. A remote attacker can exploit this vulnerability by interacting with specific components, including DnsServerApp.exe, DnsServerApp.dll, and TechnitiumLibrary.Net/Dns/DnsClient.cs. Successful exploitation leads to a denial of service, making the server unavailable to legitimate users.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-06-26 22:01:12 UTC
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