CVE intelligence and bounded remediation

CVE-2018-0362 — Cisco 5400 Enterprise Network Compute System Firmware security vulnerability

Medium CVSS 4.6

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.

Severity
Medium
CVSS
4.6 (2.0)
Published
2018-06-21
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-287

Affected products

  • cisco / 5400_enterprise_network_compute_system_firmware / 3.2(3)
  • cisco / 5100_enterprise_network_compute_system_firmware / 3.2(3)
  • cisco / ucs-e160s-m3_firmware / 3.2(3)
  • cisco / ucs-e160s-k9_firmware / 3.2(3)
  • cisco / ucs-e180d-m3_firmware / 3.2(3)
  • cisco / ucs-e180d-k9_firmware / 3.2(3)

Showing 6 representative product identities from 24 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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