{"id":"CVE-2017-3765","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-3765","generatedAt":"2026-10-28T23:13:02.965Z","title":"In Enterprise Networking Operating System (ENOS) in Lenovo and IBM RackSwitch and BladeCenter products, an authentication bypass known as \"HP Backdoor\" was discovered during a Lenovo security audit in the serial console, Telnet, SSH, and Web interfaces.","description":"In Enterprise Networking Operating System (ENOS) in Lenovo and IBM RackSwitch and BladeCenter products, an authentication bypass known as \"HP Backdoor\" was discovered during a Lenovo security audit in the serial console, Telnet, SSH, and Web interfaces. This bypass mechanism can be accessed when performing local authentication under specific circumstances. If exploited, admin-level access to the switch is granted.","published":"2018-01-10T18:29:01.000Z","lastModified":"2026-06-17T01:18:53.000Z","status":"Modified","sourceIdentifier":"psirt@lenovo.com","cvss":{"version":"3.0","score":7,"severity":"HIGH","vector":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-287"],"affected":["lenovo/enterprise network operating system"],"epss":{"score":0.00269,"percentile":0.18907,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.securitytracker.com/id/1040296","tags":["Third Party Advisory"],"source":"psirt@lenovo.com"},{"url":"https://support.lenovo.com/us/en/product_security/LEN-16095","tags":["Mitigation","Patch","Vendor Advisory"],"source":"psirt@lenovo.com"},{"url":"http://www.securitytracker.com/id/1040296","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.lenovo.com/us/en/product_security/LEN-16095","tags":["Mitigation","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-3765","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."}