How severe is CVE-2017-3765?

CVE-2017-3765 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-3765 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-3765?

CVE-2017-3765 affects Lenovo Enterprise Network Operating System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-3765?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-3765 published?

CVE-2017-3765 was published on 2018-01-10 and last updated on 2026-06-17.

CVE-2017-3765

CVE-2017-3765 is a high-severity vulnerability in Lenovo Enterprise Network Operating System with a CVSS 3.x base score of 7.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 7.0)
CVSS v2: 6.2
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Lenovo Enterprise Network Operating System
Published: 2018-01-10
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2017-3765?: 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.
How severe is CVE-2017-3765?: CVE-2017-3765 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-3765 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-3765?: CVE-2017-3765 affects Lenovo Enterprise Network Operating System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-3765?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-3765 published?: CVE-2017-3765 was published on 2018-01-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:lenovo:enterprise_network_operating_system:*:*:*:*:*:*:*:*

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