Ntpsec

9 CVEs across 2 Ntpsec products. Browse Ntpsec vulnerabilities, severities, and proof-of-concept exploits.

Ntpsec products with known CVEs

ProductCVEs
Ntpsec8
Gpsd1
Ntpsec CVEs — newest first
CVESeverityScorePublishedSummary
CVE-2026-18321Medium4.72026-07-31Buffer overflow in NTPsec's Zyfer refclock allows local attacker to crash ntpd
CVE-2026-58459High7.82026-07-09gpsd through release-3.27.5, fixed at commit 4c06658, contains a command injection vulnerability in gpsprof that allows attackers who control the GPS device su…
CVE-2023-4012High7.52023-08-07ntpd will crash if the server is not NTS-enabled (no certificate) and it receives an NTS-enabled client request (mode 3).
CVE-2021-22212Medium4.02021-06-08ntpkeygen can generate keys that ntpd fails to parse. NTPsec 1.2.0 allows ntpkeygen to generate keys with '#' characters. ntpd then either pads, shortens the k…
CVE-2019-6445Medium6.52019-01-16An issue was discovered in NTPsec before 1.1.3. An authenticated attacker can cause a NULL pointer dereference and ntpd crash in ntp_control.c, related to ctl_…
CVE-2019-6444Critical9.12019-01-16An issue was discovered in NTPsec before 1.1.3. process_control() in ntp_control.c has a stack-based buffer over-read because attacker-controlled data is deref…
CVE-2019-6443Critical9.12019-01-16An issue was discovered in NTPsec before 1.1.3. Because of a bug in ctl_getitem, there is a stack-based buffer over-read in read_sysvars in ntp_control.c in nt…
CVE-2019-6442Medium6.52019-01-16An issue was discovered in NTPsec before 1.1.3. An authenticated attacker can write one byte out of bounds in ntpd via a malformed config request, related to c…
CVE-2016-1551Low3.72017-01-27ntpd in NTP 4.2.8p3 and NTPsec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 relies on the underlying operating system to protect it from requests that impersonate…