CVE-2023-4012: Ntpsec

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

ntpd will crash if the server is not NTS-enabled (no certificate) and it receives an NTS-enabled client request (mode 3).

Affected products

• Ntpsec Ntpsec: version 1.2.2 only

Published 2023-08-07. Last modified 2026-06-17.