{"id":"CVE-2019-3978","aliases":["EUVD-2019-13585","GHSA-3m56-p87c-39jp"],"status":"published","title":"RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below allow remote unauthenticated...","description":"RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below allow remote unauthenticated attackers to trigger DNS queries via port 8291. The queries are sent from the router to a server of the attacker's choice. The DNS responses are cached by the router, potentially resulting in cache poisoning","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.10274,"percentile":0.95723,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-306"],"published":"2019-10-28T21:32:57Z","modified":"2026-06-17T02:35:59Z","exploits":[{"source":"exploitdb","id":"EDB-47566","title":"MikroTik RouterOS 6.45.6 - DNS Cache Poisoning","type":"remote","platform":"hardware","date":"2019-10-31","url":"https://www.exploit-db.com/exploits/47566"}],"products":[{"vendor":"mikrotik","product":"routeros"},{"vendor":"tenable","product":"mikrotik routeros"}],"references":[{"url":"https://www.tenable.com/security/research/tra-2019-46","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"http://packetstormsecurity.com/files/155036/MikroTik-RouterOS-6.45.6-DNS-Cache-Poisoning.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-3978"},{"url":"https://github.com/advisories/GHSA-3m56-p87c-39jp"}],"sources":{"cve":[{"id":"CVE-2019-3978","description":"RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below allow remote unauthenticated attackers to trigger DNS queries via port 8291. The queries are sent from the router to a server of the attacker's choice. The DNS responses are cached by the router, potentially resulting in cache poisoning","status":"published","published":"2019-10-28T21:32:57Z","modified":"2024-08-04T19:26:27.327Z","cwes":["CWE-306"],"updated_at":"2026-11-02T14:20:23.048861Z"}],"euvd":[{"id":"EUVD-2019-13585","description":"RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below allow remote unauthenticated attackers to trigger DNS queries via port 8291. The queries are sent from the router to a server of the attacker's choice. The DNS responses are cached by the router, potentially resulting in cache poisoning","status":"published","published":"2019-10-28T21:32:57Z","modified":"2024-08-04T19:26:27Z","updated_at":"2026-11-03T03:06:54.362786Z"}],"ghsa":[{"id":"GHSA-3m56-p87c-39jp","title":"RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below allow remote unauthenticated...","description":"RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below allow remote unauthenticated attackers to trigger DNS queries via port 8291. The queries are sent from the router to a server of the attacker's choice. The DNS responses are cached by the router, potentially resulting in cache poisoning","status":"published","published":"2022-05-24T17:00:04Z","modified":"2024-04-04T02:36:07Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:56:09.967552Z"}],"nvd":[{"id":"CVE-2019-3978","description":"RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below allow remote unauthenticated attackers to trigger DNS queries via port 8291. The queries are sent from the router to a server of the attacker's choice. The DNS responses are cached by the router, potentially resulting in cache poisoning","status":"published","published":"2019-10-29T19:15:20.5Z","modified":"2026-06-17T02:35:59.23Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:05:32.982925Z"}]}}