Package · Alpine

ntpsec

7 known vulnerabilities.

All Critical High Medium Low Exploited only Public exploit

7 results · Feed

Medium 4.7

CVE-2026-18321

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in ntpsec

Buffer overflow in NTPsec's Zyfer refclock allows local attacker to crash ntpd

NTPsec ntpsec ntpsec ntpsec Debian Ubuntu Alpine

Jul 31, 2026
High 7.5

CVE-2023-4012

Incomplete Internal State Distinction in ntpsec

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

NTPsec ntpsec ntpsec ntpsec Debian Ubuntu Alpine

Aug 7, 2023
Medium 4.0

CVE-2021-22212

ntpkeygen can generate keys that ntpd fails to parse. NTPsec 1.2.0 allows ntpkeygen to generate keys with '#' character…

NTPsec ntpsec ntpsec ntpsec Debian Alpine

Jun 8, 2021
Unscored —

CVE-2019-6443 Public exploit EPSS 67%

An issue was discovered in NTPsec before 1.1.3. Because of a bug in ctl_getitem, there is a stack-based buffer over-rea…

ntpsec ntpsec ntpsec Debian Ubuntu Alpine

Jan 16, 2019
Unscored —

CVE-2019-6442 Public exploit EPSS 14%

An issue was discovered in NTPsec before 1.1.3. An authenticated attacker can write one byte out of bounds in ntpd via …

ntpsec ntpsec ntpsec Debian Ubuntu Alpine

Jan 16, 2019
Unscored —

CVE-2019-6444 Public exploit EPSS 46%

An issue was discovered in NTPsec before 1.1.3. process_control() in ntp_control.c has a stack-based buffer over-read b…

ntpsec ntpsec ntpsec Debian Ubuntu Alpine

Jan 16, 2019
Unscored —

CVE-2019-6445 Public exploit EPSS 15%

An issue was discovered in NTPsec before 1.1.3. An authenticated attacker can cause a NULL pointer dereference and ntpd…

ntpsec ntpsec ntpsec Debian Ubuntu Alpine

Jan 16, 2019