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Vulnerabilities

Vulnerability · CVE-2026-45557

Technitium DNS Server aggressively tries to fetch missing RRSIG records or mismatched DNSKEY records.

Published May 19, 2026 · catalog updated Jul 24, 2026 · Technitium DNS Server aggressively

Check if you run it

No confirmed exploitation is on record for CVE-2026-45557. EPSS is 0.51%. Act only if a listed version of Technitium DNS Server aggressively is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Technitium DNS Server aggressively).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.51%
Remediation
Not established
Affected products
See sources for product scope

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.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-45557

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-45557. EPSS is 0.51%. Act only if a listed version of Technitium DNS Server aggressively is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-405; CWE-406; CWE-770: Allocation of Resources Without Limits or Throttling. EPSS 0.51%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 19, 2026 · NIST NVD

    Detected

    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.

  2. Jul 24, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-45557

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-45557

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-45557

    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.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.