{"id":"CVE-2017-8338","aliases":["EUVD-2017-17299","GHSA-h5g4-hpfp-3289"],"status":"published","title":"A vulnerability in MikroTik Version 6.38.5 could allow an unauthenticated remote attacker to...","description":"A vulnerability in MikroTik Version 6.38.5 could allow an unauthenticated remote attacker to exhaust all available CPU via a flood of UDP packets on port 500 (used for L2TP over IPsec), preventing the affected router from accepting new connections; all devices will be disconnected from the router and all logs removed automatically.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/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":0.04207,"percentile":0.91035,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2017-05-18T06:13:00Z","modified":"2026-06-17T01:26:12Z","products":[{"vendor":"mikrotik","product":"routeros"}],"references":[{"url":"https://cxsecurity.com/issue/WLB-2017050062","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://www.vulnerability-lab.com/get_content.php?id=2064","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2017/May/59","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://packetstormsecurity.com/files/142538/MikroTik-RouterBoard-6.38.5-Denial-Of-Service.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-8338"},{"url":"https://github.com/advisories/GHSA-h5g4-hpfp-3289"}],"sources":{"cve":[{"id":"CVE-2017-8338","description":"A vulnerability in MikroTik Version 6.38.5 could allow an unauthenticated remote attacker to exhaust all available CPU via a flood of UDP packets on port 500 (used for L2TP over IPsec), preventing the affected router from accepting new connections; all devices will be disconnected from the router and all logs removed automatically.","status":"published","published":"2017-05-18T06:13:00Z","modified":"2024-08-05T16:34:22.847Z","updated_at":"2026-11-02T14:33:14.89365Z"}],"euvd":[{"id":"EUVD-2017-17299","description":"A vulnerability in MikroTik Version 6.38.5 could allow an unauthenticated remote attacker to exhaust all available CPU via a flood of UDP packets on port 500 (used for L2TP over IPsec), preventing the affected router from accepting new connections; all devices will be disconnected from the router and all logs removed automatically.","status":"published","published":"2017-05-18T06:13:00Z","modified":"2024-08-05T16:34:22Z","updated_at":"2026-11-03T02:39:05.365606Z"}],"ghsa":[{"id":"GHSA-h5g4-hpfp-3289","title":"A vulnerability in MikroTik Version 6.38.5 could allow an unauthenticated remote attacker to...","description":"A vulnerability in MikroTik Version 6.38.5 could allow an unauthenticated remote attacker to exhaust all available CPU via a flood of UDP packets on port 500 (used for L2TP over IPsec), preventing the affected router from accepting new connections; all devices will be disconnected from the router and all logs removed automatically.","status":"published","published":"2022-05-13T01:47:28Z","modified":"2023-02-02T05:01:30Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:51:11.772726Z"}],"nvd":[{"id":"CVE-2017-8338","description":"A vulnerability in MikroTik Version 6.38.5 could allow an unauthenticated remote attacker to exhaust all available CPU via a flood of UDP packets on port 500 (used for L2TP over IPsec), preventing the affected router from accepting new connections; all devices will be disconnected from the router and all logs removed automatically.","status":"published","published":"2017-05-18T06:29:00.293Z","modified":"2026-06-17T01:26:12.46Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/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":"2026-11-02T14:03:49.449157Z"}]}}