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Ntpsec

First CVE: Jan 27, 2017Active for: 9 yearsTotal CVEs: 7

Ntpsec is a hardened, community-maintained implementation of the Network Time Protocol deployed across infrastructure and embedded systems where precise clock synchronization is critical. Despite a narrow product footprint, vulnerabilities in the ntpsec daemon skew strongly toward critical-severity outcomes and frequently acquire public exploit code, reflecting the memory-safety demands of a C-based network service exposed to untrusted time sources. The recurring weakness classes—out-of-bounds reads and writes, NULL pointer dereferences, and state-management flaws—are characteristic of parser and protocol-handling complexity in a long-lived codebase. Current severity and exploit availability are shown alongside this summary.

FAUCET AI Generated
7
Total CVEs
More Total CVEs than 88% of tracked vendors
1.8
Avg CVEs / Product / Year
More Avg CVEs / Product / Year than 79% of tracked vendors
7.1
Avg CVSS Score
Higher Avg CVSS Score than 51% of tracked vendors
0.0%
In CISA KEV
Bottom 1%

Trends Over Time

The number and severity of CVEs published that impact products developed by Ntpsec over time

Volume of CVEsAvg CVSS Base Score
First CVE
Jan 27, 2017
9 years ago
Most Recent CVE
Aug 7, 2023
1,082 days ago

Products(1 total)

Top CVEs

Signals from CVEs in this vendor scope (7 CVEs).

7 CVEs · Highest risk first

CVEPublishedCVSSRiskKEVExploit
CVE-2019-6443CRITICAL
An 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 ntpd.
Jan 16, 20199.183NOYES
CVE-2019-6444CRITICAL
An 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 dereferenced by ntohl() in
Jan 16, 20199.166NOYES
CVE-2019-6445MEDIUM
An 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_getitem.
Jan 16, 20196.540NOYES
CVE-2019-6442MEDIUM
An 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 config_remotely in ntp
Jan 16, 20196.532NOYES
CVE-2021-22212HIGH
ntpkeygen 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 key, or fails to load
Jun 8, 20217.424NONO
CVE-2023-4012HIGH
ntpd will crash if the server is not NTS-enabled (no certificate) and it receives an NTS-enabled client request (mode 3).
Aug 7, 20237.520NONO
CVE-2016-1551LOW
ntpd in NTP 4.2.8p3 and NTPsec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 relies on the underlying operating system to protect it from requests that impersonate reference clocks. Bec
Jan 27, 20173.713NONO
View all 7 CVEs →

CVE Severity & Scoring

Severity distribution of CVEs that affect this vendor's products7 CVEs
14%
29%
29%
29%
Severity distribution among all CVEs352,231 CVEs
45%
40%
11%
LowMediumHighCritical
Attack Vector
Local0 (0.0%)
Network7 (100.0%)
Unknown0 (0.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low5 (71.4%)
High2 (28.6%)
Unknown0 (0.0%)
User Interaction
None7 (100.0%)
Unknown0 (0.0%)
Required0 (0.0%)
Privileges Required
Low2 (28.6%)
High0 (0.0%)
None5 (71.4%)
Unknown0 (0.0%)

Exploit Exposure

Signals from CVEs in this vendor scope (7 CVEs).

CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
1 CVE
14.3% of CVEs· 97th percentile
ExploitDB
4 CVEs
57.1% of CVEs· 83rd percentile

Social Chatter

An overview of all social media posts that mention a CVE ID that affects a product developed by Ntpsec.

Media Mentions

Media articles that mention a CVE ID that affects a product developed by Ntpsec — matched by CVE ID, not by vendor name.

Top CNAs Publishing CVEs For Ntpsec's Products

View all 3 CNAs →

Top CWEs