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Vulnerability details: VCID-d27b-a6y5-ybfw
Vulnerability ID VCID-d27b-a6y5-ybfw
Aliases CVE-2019-6443
Summary 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.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-125 Out-of-bounds Read
System Score Found at
epss 0.43948 https://api.first.org/data/v1/epss?cve=CVE-2019-6443
epss 0.43948 https://api.first.org/data/v1/epss?cve=CVE-2019-6443
epss 0.43948 https://api.first.org/data/v1/epss?cve=CVE-2019-6443
epss 0.43948 https://api.first.org/data/v1/epss?cve=CVE-2019-6443
epss 0.43948 https://api.first.org/data/v1/epss?cve=CVE-2019-6443
epss 0.43948 https://api.first.org/data/v1/epss?cve=CVE-2019-6443
epss 0.43948 https://api.first.org/data/v1/epss?cve=CVE-2019-6443
epss 0.43948 https://api.first.org/data/v1/epss?cve=CVE-2019-6443
epss 0.43948 https://api.first.org/data/v1/epss?cve=CVE-2019-6443
epss 0.43948 https://api.first.org/data/v1/epss?cve=CVE-2019-6443
epss 0.43948 https://api.first.org/data/v1/epss?cve=CVE-2019-6443
epss 0.43948 https://api.first.org/data/v1/epss?cve=CVE-2019-6443
epss 0.43948 https://api.first.org/data/v1/epss?cve=CVE-2019-6443
cvssv2 6.4 https://nvd.nist.gov/vuln/detail/CVE-2019-6443
cvssv3 9.1 https://nvd.nist.gov/vuln/detail/CVE-2019-6443
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2019-6443
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6443
https://dumpco.re/blog/ntpsec-bugs
https://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWS
https://www.exploit-db.com/exploits/46175/
919513 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=919513
cpe:2.3:a:ntpsec:ntpsec:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:ntpsec:ntpsec:*:*:*:*:*:*:*:*
CVE-2019-6443 Exploit https://dumpco.re/bugs/ntpsec-oobread1
CVE-2019-6443 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/46175.py
CVE-2019-6443 https://nvd.nist.gov/vuln/detail/CVE-2019-6443
Data source Exploit-DB
Date added Jan. 16, 2019
Description NTPsec 1.1.2 - 'ctl_getitem' Out-of-Bounds Read (PoC)
Ransomware campaign use Known
Source publication date Jan. 16, 2019
Exploit type dos
Platform linux
Source update date Jan. 16, 2019
Source URL https://dumpco.re/bugs/ntpsec-oobread1
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2019-6443
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2019-6443
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.97511
EPSS Score 0.43948
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T16:33:53.128720+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.0.0