HOMEVULNERABILITIESCVE-2019-6444
CRITICALPOC

CVE-2019-6444

CWE-125Published: January 16, 2019· Updated: Jun 17, 2026

9.1
CVSS v3.1

Official Description

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 ntpd.

NVD Source

Technical Analysis

CVE-2019-6444 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 9.1.

A proof-of-concept (PoC) exploit exists for CVE-2019-6444. 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.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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-oobread2
ADVISORYhttps://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWS
ADVISORYhttps://www.exploit-db.com/exploits/46176/
ADVISORYhttps://dumpco.re/blog/ntpsec-bugs
ADVISORYhttps://dumpco.re/bugs/ntpsec-oobread2
ADVISORYhttps://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWS
ADVISORYhttps://www.exploit-db.com/exploits/46176/

All References (8)

→
https://dumpco.re/blog/ntpsec-bugsExploit · Third Party Advisory
→
https://dumpco.re/bugs/ntpsec-oobread2Exploit · Third Party Advisory
→
https://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWSRelease Notes · Third Party Advisory
→
https://www.exploit-db.com/exploits/46176/Exploit · Third Party Advisory · VDB Entry
→
https://dumpco.re/blog/ntpsec-bugsExploit · Third Party Advisory
→
https://dumpco.re/bugs/ntpsec-oobread2Exploit · Third Party Advisory
→
https://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWSRelease Notes · Third Party Advisory
→
https://www.exploit-db.com/exploits/46176/Exploit · Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2019-6444
CVSS Score9.1 / 10
SeverityCRITICAL
WeaknessCWE-125
CISA KEVNo
ExploitPOC
Affected1 vendor(s)
PublishedJan 16, 2019

Related CVEs (CWE-125)

CVE-2021-41556
10.0
CVE-2017-14451
10.0
CVE-2021-21777
10.0
CVE-2009-2523
10.0
CVE-2013-0767
10.0
CVE-2023-26489
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-6444 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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