HOMEVULNERABILITIESCVE-2019-6445
MEDIUMPOC

CVE-2019-6445

CWE-476Published: January 16, 2019· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2019-6445 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.

A proof-of-concept (PoC) exploit exists for CVE-2019-6445. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

ntpsec1 product(s)
ntpsec
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://dumpco.re/blog/ntpsec-bugs
ADVISORYhttps://dumpco.re/bugs/ntpsec-authed-npe
ADVISORYhttps://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWS
ADVISORYhttps://www.exploit-db.com/exploits/46177/
ADVISORYhttps://dumpco.re/blog/ntpsec-bugs
ADVISORYhttps://dumpco.re/bugs/ntpsec-authed-npe
ADVISORYhttps://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWS
ADVISORYhttps://www.exploit-db.com/exploits/46177/

All References (8)

→
https://dumpco.re/blog/ntpsec-bugsExploit · Third Party Advisory
→
https://dumpco.re/bugs/ntpsec-authed-npeExploit · Third Party Advisory
→
https://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWSRelease Notes · Third Party Advisory
→
https://www.exploit-db.com/exploits/46177/Exploit · Third Party Advisory · VDB Entry
→
https://dumpco.re/blog/ntpsec-bugsExploit · Third Party Advisory
→
https://dumpco.re/bugs/ntpsec-authed-npeExploit · Third Party Advisory
→
https://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWSRelease Notes · Third Party Advisory
→
https://www.exploit-db.com/exploits/46177/Exploit · Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2019-6445
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-476
CISA KEVNo
ExploitPOC
Affected1 vendor(s)
PublishedJan 16, 2019

Related CVEs (CWE-476)

CVE-2010-2495
10.0
CVE-2022-36648
10.0
CVE-2021-3319
9.8
CVE-2019-16092
9.8
CVE-2019-20914
9.8
CVE-2021-1946
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-6445 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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