CVE-2017-3765 json
In Enterprise Networking Operating System (ENOS) in Lenovo and IBM RackSwitch and BladeCenter products, an authentication bypass known as "…
published 2018-01-10 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-12882
- cvss
- 7.0
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 19%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- lenovo enterprise_network_operating_system 8.4.6.0
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.0 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.2 | AV:L/AC:H/Au:N/C:C/I:C/A:C |
Affected products
- Lenovo Group Ltd. Enterprise Network Operating System affecting Lenovo and IBM RackSwitch and BladeCenter Products
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
support.lenovo.com
/us/en/product_security/LEN-16095
mitigation, patch, vendor-advisory
-
securitytracker.com
/id/1040296
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2017-3765
- NVD CVE-2017-3765
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.