{"id":"CVE-2019-6553","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-6553","generatedAt":"2026-11-05T03:06:37.749Z","title":"A vulnerability was found in Rockwell Automation RSLinx Classic versions 4.10.00 and prior.","description":"A vulnerability was found in Rockwell Automation RSLinx Classic versions 4.10.00 and prior. An input validation issue in a .dll file of RSLinx Classic where the data in a Forward Open service request is passed to a fixed size buffer, allowing an attacker to exploit a stack-based buffer overflow condition.","published":"2019-04-04T19:29:02.000Z","lastModified":"2026-06-17T02:39:15.000Z","status":"Modified","sourceIdentifier":"ics-cert@hq.dhs.gov","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-121","CWE-787"],"affected":["rockwellautomation/rslinx"],"epss":{"score":0.66341,"percentile":0.99282,"date":"2026-11-03","history":[{"date":"2026-09-24","score":0.66107,"percentile":0.99252}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 66.3%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-09-24T00:00:00.000Z","detail":{"to":0.66107,"from":0.60094,"percentile":0.99252},"summary":"EPSS moved from 60.1% to 66.1% probability of exploitation in the next thirty days."}],"references":[{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-19-064-01","tags":["Third Party Advisory","US Government Resource"],"source":"ics-cert@hq.dhs.gov"},{"url":"https://ics-cert.us-cert.gov/advisories/ICSA-19-064-01","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-6553","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."}