{"id":"CVE-2019-3924","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-3924","generatedAt":"2026-10-27T20:20:21.351Z","title":"MikroTik RouterOS before 6.43.12 (stable) and 6.42.12 (long-term) is vulnerable to an intermediary vulnerability.","description":"MikroTik RouterOS before 6.43.12 (stable) and 6.42.12 (long-term) is vulnerable to an intermediary vulnerability. The software will execute user defined network requests to both WAN and LAN clients. A remote unauthenticated attacker can use this vulnerability to bypass the router's firewall or for general network scanning activities.","published":"2019-02-20T20:29:03.000Z","lastModified":"2026-06-17T02:35:52.000Z","status":"Analyzed","sourceIdentifier":"vulnreport@tenable.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-441"],"affected":["mikrotik/routeros"],"epss":{"score":0.15697,"percentile":0.96834,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2019-02-21","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":46444,"kind":"exploit","title":"MikroTik RouterOS < 6.43.12 (stable) / < 6.42.12 (long-term) - Firewall and NAT Bypass","url":"https://www.exploit-db.com/exploits/46444","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/hardware/remote/46444.txt","file":"exploits/hardware/remote/46444.txt","published":"2019-02-21","added":"2019-02-21","updated":"2019-02-21","author":"Jacob Baines","type":"remote","platform":"hardware","port":null,"verified":true,"codes":["CVE-2019-3924"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 15.7%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/107177","tags":["Third Party Advisory","VDB Entry"],"source":"vulnreport@tenable.com"},{"url":"https://www.exploit-db.com/exploits/46444/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"vulnreport@tenable.com"},{"url":"https://www.tenable.com/security/research/tra-2019-07","tags":["Exploit","Third Party Advisory"],"source":"vulnreport@tenable.com"},{"url":"http://www.securityfocus.com/bid/107177","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/46444/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.tenable.com/security/research/tra-2019-07","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-3924","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."}