Vulnerability Description
Technitium DNS Server aggressively tries to fetch missing RRSIG records or mismatched DNSKEY records. An attacker in control of a domain can cause a vulnerable system to generate excessive network traffic. Fixed in 15.0.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/TechnitiumSoftware/DnsServer/blo/master/CHANGELOG.md#version-
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/
- https://www.cve.org/CVERecord?id=CVE-2026-45557
FAQ
What is CVE-2026-45557?
CVE-2026-45557 is a vulnerability with a CVSS score of 5.8 (MEDIUM). Technitium DNS Server aggressively tries to fetch missing RRSIG records or mismatched DNSKEY records. An attacker in control of a domain can cause a vulnerable system to generate excessive network tra...
How severe is CVE-2026-45557?
CVE-2026-45557 has been rated MEDIUM with a CVSS base score of 5.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45557?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.