{"id":"CVE-2023-26554","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-26554","generatedAt":"2026-10-24T09:05:37.999Z","title":"mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a '\\0' character.","description":"mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a '\\0' character. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.","published":"2023-04-11T21:15:22.000Z","lastModified":"2026-06-17T05:43:35.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":5.6,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L"},"cwe":["CWE-787"],"affected":["ntp/ntp"],"epss":{"score":0.0064,"percentile":0.50037,"date":"2026-10-23","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.64%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26554","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26554","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-26554","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."}