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CVE-2019-6443

83
FAUCET Score

CVE-2019-6443 describes a stack-based buffer over-read vulnerability in NTPsec versions prior to 1.1.3, specifically within the ctl_getitem function in ntp_control.c. This critical vulnerability, rated 9.1 CVSS, allows an unauthenticated attacker to achieve high confidentiality and availability impact over the network with low attack complexity. While not listed on the KEV catalog or showing active exploitation, a Proof-of-Concept exploit is publicly available on ExploitDB, though it has garnered minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.1.3CPE matchmatch criteria
cpe:2.3:a:ntpsec:ntpsec:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.1CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
66.88%
Probability of exploitation in next 30 days
EPSS Percentile
99.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2019-6443 · Nov 3, 2025
ExploitDB: EDB-46175 · Jan 16, 2019
This CVE's current EPSS score of 0.6688 is in the 97th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Remediation records are not available for this CVE.

References

dumpco.re / blog/ntpsec-bugs
ExploitThird Party Advisory
dumpco.re / bugs/ntpsec-oobread1
ExploitThird Party Advisory
github.com / ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWS
Release NotesThird Party Advisory
exploit-db.com / exploits/46175
ExploitThird Party AdvisoryVDB Entry