{"cve":"CVE-2017-8338","nvd":{"published":"2017-05-18T06:29:00.293","modified":"2026-06-17T01:26:12.460","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400"],"references":["http://seclists.org/fulldisclosure/2017/May/59","https://cxsecurity.com/issue/WLB-2017050062","https://packetstormsecurity.com/files/142538/MikroTik-RouterBoard-6.38.5-Denial-Of-Service.html","https://www.vulnerability-lab.com/get_content.php?id=2064","http://seclists.org/fulldisclosure/2017/May/59"],"products":["mikrotik:routeros"],"source":"nvd","synced_at":"2026-10-19T20:42:36.429588156+00:00"},"epss":{"cve":"CVE-2017-8338","score":0.04207,"percentile":0.90973,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}