{"id":"CVE-2017-16740","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-16740","generatedAt":"2026-10-28T20:09:54.082Z","title":"A Buffer Overflow issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1400 Controllers, Series B and C Versions 21.002 and earlier.","description":"A Buffer Overflow issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1400 Controllers, Series B and C Versions 21.002 and earlier. The stack-based buffer overflow vulnerability has been identified, which may allow remote code execution.","published":"2018-01-09T21:29:00.000Z","lastModified":"2026-06-17T01:09:44.000Z","status":"Modified","sourceIdentifier":"ics-cert@hq.dhs.gov","cvss":{"version":"3.0","score":10,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"},"cwe":["CWE-120","CWE-119"],"affected":["rockwellautomation/1766-l32bxba firmware","rockwellautomation/1766-l32awa firmware","rockwellautomation/1766-l32bxb firmware","rockwellautomation/1766-l32bwaa firmware","rockwellautomation/1766-l32awaa firmware","rockwellautomation/1766-l32bwa firmware"],"epss":{"score":0.07204,"percentile":0.94275,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.11169,"percentile":0.9581},{"date":"2026-09-22","score":0.07145,"percentile":0.93986}]},"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 (7.20%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-09-21T00:00:00.000Z","detail":{"to":0.11169,"from":0.07145,"percentile":0.9581},"summary":"EPSS moved from 7.1% to 11.2% probability of exploitation in the next thirty days."}],"references":[{"url":"http://www.securityfocus.com/bid/102474","tags":["Mitigation","Third Party Advisory","VDB Entry"],"source":"ics-cert@hq.dhs.gov"},{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-009-01","tags":["Third Party Advisory","US Government Resource"],"source":"ics-cert@hq.dhs.gov"},{"url":"https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1070883","source":"ics-cert@hq.dhs.gov"},{"url":"http://www.securityfocus.com/bid/102474","tags":["Mitigation","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-009-01","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1070883","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-16740","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."}