{"id":"CVE-2017-6444","aliases":["EUVD-2017-15501","GHSA-j46g-4x3w-74pw"],"status":"published","title":"The MikroTik Router hAP Lite 6.25 has no protection mechanism for unsolicited TCP ACK packets in...","description":"The MikroTik Router hAP Lite 6.25 has no protection mechanism for unsolicited TCP ACK packets in the case of a fast network connection, which allows remote attackers to cause a denial of service (CPU consumption) by sending many ACK packets. After the attacker stops the exploit, the CPU usage is 100% and the router requires a reboot for normal operation.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.13486,"percentile":0.96468,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-400"],"published":"2017-03-12T04:57:00Z","modified":"2026-06-17T01:22:21Z","exploits":[{"source":"exploitdb","id":"EDB-41601","title":"MikroTik Router - ARP Table OverFlow Denial Of Service","type":"dos","platform":"hardware","date":"2017-03-05","url":"https://www.exploit-db.com/exploits/41601"}],"products":[{"vendor":"mikrotik","product":"routeros"}],"references":[{"url":"https://www.exploit-db.com/exploits/41601/","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://cxsecurity.com/issue/WLB-2017030029","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://packetstormsecurity.com/files/141449/Mikrotik-Hap-Lite-6.25-Denial-Of-Service.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://www.exploitalert.com/view-details.html?id=26137","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-6444"},{"url":"https://www.exploit-db.com/exploits/41601"},{"url":"https://github.com/advisories/GHSA-j46g-4x3w-74pw"}],"sources":{"cve":[{"id":"CVE-2017-6444","description":"The MikroTik Router hAP Lite 6.25 has no protection mechanism for unsolicited TCP ACK packets in the case of a fast network connection, which allows remote attackers to cause a denial of service (CPU consumption) by sending many ACK packets. After the attacker stops the exploit, the CPU usage is 100% and the router requires a reboot for normal operation.","status":"published","published":"2017-03-12T04:57:00Z","modified":"2024-08-05T15:33:20.061Z","updated_at":"2026-11-02T14:33:16.916541Z"}],"euvd":[{"id":"EUVD-2017-15501","description":"The MikroTik Router hAP Lite 6.25 has no protection mechanism for unsolicited TCP ACK packets in the case of a fast network connection, which allows remote attackers to cause a denial of service (CPU consumption) by sending many ACK packets. After the attacker stops the exploit, the CPU usage is 100% and the router requires a reboot for normal operation.","status":"published","published":"2017-03-12T04:57:00Z","modified":"2024-08-05T15:33:20Z","updated_at":"2026-11-03T02:39:12.023695Z"}],"ghsa":[{"id":"GHSA-j46g-4x3w-74pw","title":"The MikroTik Router hAP Lite 6.25 has no protection mechanism for unsolicited TCP ACK packets in...","description":"The MikroTik Router hAP Lite 6.25 has no protection mechanism for unsolicited TCP ACK packets in the case of a fast network connection, which allows remote attackers to cause a denial of service (CPU consumption) by sending many ACK packets. After the attacker stops the exploit, the CPU usage is 100% and the router requires a reboot for normal operation.","status":"published","published":"2022-05-13T01:10:01Z","modified":"2025-04-20T03:35:03Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:01:42.453698Z"}],"nvd":[{"id":"CVE-2017-6444","description":"The MikroTik Router hAP Lite 6.25 has no protection mechanism for unsolicited TCP ACK packets in the case of a fast network connection, which allows remote attackers to cause a denial of service (CPU consumption) by sending many ACK packets. After the attacker stops the exploit, the CPU usage is 100% and the router requires a reboot for normal operation.","status":"published","published":"2017-03-12T05:59:00.227Z","modified":"2026-06-17T01:22:21.53Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:03:44.275273Z"}]}}