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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 55.2%