{"id":"CVE-2018-13457","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-13457","generatedAt":"2026-10-28T21:23:18.034Z","title":"qh_echo in Nagios Core 4.4.1 and earlier is prone to a NULL pointer dereference vulnerability, which allows attackers to cause a local denial-of-service condition by sending a crafted payload to the listening UNIX socket.","description":"qh_echo in Nagios Core 4.4.1 and earlier is prone to a NULL pointer dereference vulnerability, which allows attackers to cause a local denial-of-service condition by sending a crafted payload to the listening UNIX socket.","published":"2018-07-12T18:29:00.000Z","lastModified":"2026-06-17T01:39:26.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"cwe":["CWE-476"],"affected":["nagios/nagios core"],"epss":{"score":0.04453,"percentile":0.91373,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.07258,"percentile":0.94148},{"date":"2026-09-22","score":0.04453,"percentile":0.90985}]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2018-07-24","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":45082,"kind":"exploit","title":"Nagios Core 4.4.1 - Denial of Service","url":"https://www.exploit-db.com/exploits/45082","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/45082.txt","file":"exploits/linux/dos/45082.txt","published":"2018-07-24","added":"2018-07-24","updated":"2018-07-25","author":"Fakhri Zulkifli","type":"dos","platform":"linux","port":null,"verified":false,"codes":["CVE-2018-13458","CVE-2018-13457","CVE-2018-13441"],"tags":"Denial of Service (DoS)","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"high","text":"A public exploit is published in Exploit-DB, so the technical barrier is gone even though the severity is medium and EPSS is 4.5%. Treat it as high on anything reachable from the internet."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00014.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00022.html","source":"cve@mitre.org"},{"url":"https://gist.github.com/fakhrizulkifli/87cf1c1ad403b4d40a86d90c9c9bf7ab","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://knowledge.opsview.com/v5.3/docs/whats-new","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://knowledge.opsview.com/v5.4/docs/whats-new","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.exploit-db.com/exploits/45082/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00014.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00022.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gist.github.com/fakhrizulkifli/87cf1c1ad403b4d40a86d90c9c9bf7ab","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://knowledge.opsview.com/v5.3/docs/whats-new","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://knowledge.opsview.com/v5.4/docs/whats-new","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/45082/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-13457","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."}