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Vulnerability record · CVE-2018-0362 · published 21 June 2018

CVE-2018-0362: Cisco 5400 enterprise network compute system firmware improper authentication vulnerability

Cisco · 5400 Enterprise Network Compute System Firmware

A vulnerability in BIOS authentication management of Cisco 5000 Series Enterprise Network Compute System and Cisco Unified Computing (UCS) E-Series Servers could allow an unauthenticated, local attacker to bypass the BIOS authentication and execute actions as an unprivileged user. The vulnerability is due to improper security restrictions that are imposed by the affected system. An attacker could exploit this vulnerability by submitting an empty password value to an affected device's BIOS authentication prompt. An exploit could allow the attacker to have access to a restricted set of user-level BIOS commands. Cisco Bug IDs: CSCvh83260.

4.3 CVSS 3.0 Medium EPSS 0.35% · top 73.1% CWE-287 · Improper authentication
4.3CVSS 3.0 base score, v2 4.6
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
21Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

A vulnerability in BIOS authentication management of Cisco 5000 Series Enterprise Network Compute System and Cisco Unified Computing (UCS) E-Series Servers could allow an unauthenticated, local attacker to bypass the BIOS authentication and execute actions as an unprivileged user. The vulnerability is due to improper security restrictions that are imposed by the affected system. An attacker could exploit this vulnerability by submitting an empty password value to an affected device's BIOS authentication prompt. An exploit could allow the attacker to have access to a restricted set of user-level BIOS commands. Cisco Bug IDs: CSCvh83260.

CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected products

21 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securitytracker.com/id/1041173 Third Party AdvisoryVDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-encs-ucs-bios-auth-bypass Vendor Advisory
http://www.securitytracker.com/id/1041173 Third Party AdvisoryVDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-encs-ucs-bios-auth-bypass Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-0362), CISA KEV, FIRST EPSS (scores of 2026-10-07). This page is refreshed as NVD updates the record.