{"id":"CVE-2018-1156","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-1156","generatedAt":"2026-10-28T21:20:21.435Z","title":"Mikrotik RouterOS before 6.42.7 and 6.40.9 is vulnerable to stack buffer overflow through the license upgrade interface.","description":"Mikrotik RouterOS before 6.42.7 and 6.40.9 is vulnerable to stack buffer overflow through the license upgrade interface. This vulnerability could theoretically allow a remote authenticated attacker execute arbitrary code on the system.","published":"2018-08-23T19:29:00.000Z","lastModified":"2026-06-17T01:50:36.000Z","status":"Modified","sourceIdentifier":"vulnreport@tenable.com","cvss":{"version":"3.0","score":8.8,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-787"],"affected":["mikrotik/routeros"],"epss":{"score":0.07431,"percentile":0.94417,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.06202,"percentile":0.93277},{"date":"2026-09-22","score":0.07431,"percentile":0.94171}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (7.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://mikrotik.com/download/changelogs","tags":["Vendor Advisory"],"source":"vulnreport@tenable.com"},{"url":"https://mikrotik.com/download/changelogs/bugfix-release-tree","tags":["Vendor Advisory"],"source":"vulnreport@tenable.com"},{"url":"https://www.tenable.com/security/research/tra-2018-21","tags":["Exploit","Third Party Advisory"],"source":"vulnreport@tenable.com"},{"url":"https://mikrotik.com/download/changelogs","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://mikrotik.com/download/changelogs/bugfix-release-tree","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.tenable.com/security/research/tra-2018-21","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-1156","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."}