CVE-2023-26551: Ntp

Medium severity, CVSS 5.6. EPSS: 0.7% chance of exploitation in the next 30 days.

mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write in the cp<cpdec while loop. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.

Affected products

• Ntp Ntp: version 4.2.8 only

Published 2023-04-11. Last modified 2026-06-17.