CVE intelligence and bounded remediation

CVE-2022-26476 — Siemens Spectrum Power 4 security vulnerability

High CVSS 8.8

A vulnerability has been identified in Spectrum Power 4 (All versions using Shared HIS), Spectrum Power 7 (All versions using Shared HIS), Spectrum Power MGMS (All versions using Shared HIS). An unauthenticated attacker could log into the component Shared HIS used in Spectrum Power systems by using an account with default credentials. A successful exploitation could allow the attacker to access the component Shared HIS with administrative privileges.

Severity
High
CVSS
8.8 (3.1)
Published
2022-06-14
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-798

Affected products

  • siemens / spectrum_power_4
  • siemens / spectrum_power_7
  • siemens / spectrum_power_microgrid_management_system

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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