{"id":"CVE-2019-6443","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-6443","generatedAt":"2026-10-27T23:26:03.231Z","title":"An issue was discovered in NTPsec before 1.1.3.","description":"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.","published":"2019-01-16T05:29:01.000Z","lastModified":"2026-06-17T02:39:04.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":9.1,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"},"cwe":["CWE-125"],"affected":["ntpsec/ntpsec"],"epss":{"score":0.66881,"percentile":0.99288,"date":"2026-10-26","history":[{"date":"2026-09-21","score":0.36614,"percentile":0.98473},{"date":"2026-09-22","score":0.66881,"percentile":0.99259}]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2019-01-16","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":46175,"kind":"exploit","title":"NTPsec 1.1.2 - 'ctl_getitem' Out-of-Bounds Read (PoC)","url":"https://www.exploit-db.com/exploits/46175","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/46175.py","file":"exploits/linux/dos/46175.py","published":"2019-01-16","added":"2019-01-16","updated":"2019-01-16","author":"Magnus Klaaborg Stubman","type":"dos","platform":"linux","port":123,"verified":true,"codes":["CVE-2019-6443"],"tags":"Out Of Bounds","aliases":null,"applicationUrl":"http://www.exploit-db.comntpsec-1.1.2.tar.gz","screenshotUrl":null,"referenceUrl":"https://dumpco.re/bugs/ntpsec-oobread1"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 66.9%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-09-22T00:00:00.000Z","detail":{"to":0.66881,"from":0.36614,"percentile":0.99259},"summary":"EPSS moved from 36.6% to 66.9% probability of exploitation in the next thirty days."},{"kind":"epss","label":"EPSS jump","at":"2026-09-21T00:00:00.000Z","detail":{"to":0.36614,"from":0.66881,"percentile":0.98473},"summary":"EPSS moved from 66.9% to 36.6% probability of exploitation in the next thirty days."}],"references":[{"url":"https://dumpco.re/blog/ntpsec-bugs","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://dumpco.re/bugs/ntpsec-oobread1","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWS","tags":["Release Notes","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/46175/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"https://dumpco.re/blog/ntpsec-bugs","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://dumpco.re/bugs/ntpsec-oobread1","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/ntpsec/ntpsec/blob/NTPsec_1_1_3/NEWS","tags":["Release Notes","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/46175/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-6443","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}