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Ntpsec

9 CVEs product

Monthly

CVE-2026-58459 Jul 09, 16:14 HIGH PATCH This Week

Arbitrary shell command execution in gpsd's gpsprof profiling tool (through release-3.27.5) allows an attacker who controls a GPS device's subtype value to run commands as the user rendering the plot. The subtype string - taken from a DEVICES JSON log entry or an NMEA PGRMT sentence - is embedded into a generated gnuplot program's `set title` statement with only double quotes escaped, so backtick payloads execute when the victim renders the plot via the gpsprof/gnuplot workflow. This was reported by VulnCheck; a vendor fix is available (fixed at commit 4c06658), and there is no public exploit identified at time of analysis and it is not listed in CISA KEV.

Command Injection Red Hat Gpsd Suse Ntpsec
NVD GitHub VulDB
CVSS 4.0
8.4
EPSS
0.7%
CVE-2026-18321 Jul 31, 18:04 MEDIUM PATCH This Month

Buffer overflow in NTPsec's Zyfer refclock driver crashes the ntpd daemon on affected systems running versions prior to 1.2.5. A local, low-privileged attacker with high attack complexity can trigger the CWE-120 classic buffer overflow, resulting in a denial-of-service impact limited to availability - no confidentiality or integrity exposure exists. No public exploit has been identified at time of analysis, and the vulnerability is not listed in CISA KEV.

Buffer Overflow Ntpsec
NVD VulDB
CVSS 3.1
4.7
EPSS
0.1%
CVE-2023-4012 Aug 07, 18:15 HIGH This Week

ntpd will crash if the server is not NTS-enabled (no certificate) and it receives an NTS-enabled client request (mode 3). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Ntpsec
NVD
CVSS 3.1
7.5
EPSS
0.4%
CVE-2021-22212 Jun 08, 13:15 HIGH PATCH This Week

ntpkeygen can generate keys that ntpd fails to parse. Rated high severity (CVSS 7.4), this vulnerability is remotely exploitable, no authentication required.

Information Disclosure Fedora Ntpsec Fedoraproject
NVD
CVSS 3.1
7.4
EPSS
0.5%
CVE-2019-6445 Jan 16, 05:29 MEDIUM POC THREAT This Month

An issue was discovered in NTPsec before 1.1.3. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Denial Of Service Null Pointer Dereference Ntpsec
NVD GitHub Exploit-DB
CVSS 3.0
6.5
EPSS
14.1%
CVE-2019-6444 Jan 16, 05:29 CRITICAL POC THREAT Act Now

An issue was discovered in NTPsec before 1.1.3. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Buffer Overflow Information Disclosure Ntpsec
NVD GitHub Exploit-DB
CVSS 3.0
9.1
EPSS
45.7%
CVE-2019-6443 Jan 16, 05:29 CRITICAL POC THREAT Act Now

An issue was discovered in NTPsec before 1.1.3. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Buffer Overflow Information Disclosure Ntpsec
NVD GitHub Exploit-DB
CVSS 3.0
9.1
EPSS
66.9%
CVE-2019-6442 Jan 16, 05:29 MEDIUM POC THREAT This Month

An issue was discovered in NTPsec before 1.1.3. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Buffer Overflow Memory Corruption Ntpsec
NVD GitHub Exploit-DB
CVSS 3.0
6.5
EPSS
13.7%
CVE-2016-1551 Jan 27, 17:59 LOW Monitor

ntpd in NTP 4.2.8p3 and NTPsec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 relies on the underlying operating system to protect it from requests that impersonate reference clocks. Rated low severity (CVSS 3.7), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

Information Disclosure Ntp Ntpsec
NVD VulDB
CVSS 3.0
3.7
EPSS
1.0%
EPSS 1% CVSS 8.4
HIGH PATCH This Week

Arbitrary shell command execution in gpsd's gpsprof profiling tool (through release-3.27.5) allows an attacker who controls a GPS device's subtype value to run commands as the user rendering the plot. The subtype string - taken from a DEVICES JSON log entry or an NMEA PGRMT sentence - is embedded into a generated gnuplot program's `set title` statement with only double quotes escaped, so backtick payloads execute when the victim renders the plot via the gpsprof/gnuplot workflow. This was reported by VulnCheck; a vendor fix is available (fixed at commit 4c06658), and there is no public exploit identified at time of analysis and it is not listed in CISA KEV.

Command Injection Red Hat Gpsd +2
NVD GitHub VulDB
EPSS 0% CVSS 4.7
MEDIUM PATCH This Month

Buffer overflow in NTPsec's Zyfer refclock driver crashes the ntpd daemon on affected systems running versions prior to 1.2.5. A local, low-privileged attacker with high attack complexity can trigger the CWE-120 classic buffer overflow, resulting in a denial-of-service impact limited to availability - no confidentiality or integrity exposure exists. No public exploit has been identified at time of analysis, and the vulnerability is not listed in CISA KEV.

Buffer Overflow Ntpsec
NVD VulDB
EPSS 0% CVSS 7.5
HIGH This Week

ntpd will crash if the server is not NTS-enabled (no certificate) and it receives an NTS-enabled client request (mode 3). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Denial Of Service Ntpsec
NVD
EPSS 1% CVSS 7.4
HIGH PATCH This Week

ntpkeygen can generate keys that ntpd fails to parse. Rated high severity (CVSS 7.4), this vulnerability is remotely exploitable, no authentication required.

Information Disclosure Fedora Ntpsec +1
NVD
EPSS 14% CVSS 6.5
MEDIUM POC THREAT This Month

An issue was discovered in NTPsec before 1.1.3. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Denial Of Service Null Pointer Dereference Ntpsec
NVD GitHub Exploit-DB
EPSS 46% CVSS 9.1
CRITICAL POC THREAT Act Now

An issue was discovered in NTPsec before 1.1.3. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Buffer Overflow Information Disclosure Ntpsec
NVD GitHub Exploit-DB
EPSS 67% CVSS 9.1
CRITICAL POC THREAT Act Now

An issue was discovered in NTPsec before 1.1.3. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Buffer Overflow Information Disclosure Ntpsec
NVD GitHub Exploit-DB
EPSS 14% CVSS 6.5
MEDIUM POC THREAT This Month

An issue was discovered in NTPsec before 1.1.3. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Buffer Overflow Memory Corruption Ntpsec
NVD GitHub Exploit-DB
EPSS 1% CVSS 3.7
LOW Monitor

ntpd in NTP 4.2.8p3 and NTPsec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 relies on the underlying operating system to protect it from requests that impersonate reference clocks. Rated low severity (CVSS 3.7), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

Information Disclosure Ntp Ntpsec
NVD VulDB

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