CVE-2026-45557
5.8 MEDIUMTechnitium DNS Server aggressively tries to fetch missing RRSIG records or mismatched DNSKEY records
Published: 2026-05-19 · Last updated: 2026-05-19
Severity and scoring
- CVSS
- 5.8 MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
- CWE
- CWE-405, CWE-406, CWE-770
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-45557
- [Other]https://github.com/TechnitiumSoftware/DnsServer/blo/master/CHANGELOG.md#version-150
- [Other]https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-26-138-02.json
- [Other]https://www.cve.org/CVERecord?id=CVE-2026-45557
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