CVE-2022-26476

Administrative access via leaked default Shared HIS credentials

Published Jun 14, 2022 · Updated Aug 3, 2024

Hard-coded credentials in Siemens Spectrum Power 4, 7, and MGMS using Shared HIS allow attackers to gain administrative access. The Shared HIS component in every product version that uses it accepts an account with a default password whose value was leaked publicly. Access requires reachability from an adjacent network and knowledge of the default credentials, and successful login grants administrative control of Shared HIS.

CVSS severity8.8
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded credentials in Siemens Spectrum Power 4, 7, and MGMS using Shared HIS allow attackers to gain administrative access. The Shared HIS component in every product version that uses it accepts an account with a default password whose value was leaked publicly. Access requires reachability from an adjacent network and knowledge of the default credentials, and successful login grants administrative control of Shared HIS.

The record

CVE
CVE-2022-26476
Published
Jun 14, 2022
Updated
Aug 3, 2024
Vendor
Siemens
Product
Spectrum Power 4
Classifications
CWE-798, CAPEC-70, T1078.001
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions using Shared HIS

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Siemens · Spectrum Power 4version=All versions using Shared HIS
Siemens · Spectrum Power Microgrid Management Systemversion=All versions using Shared HIS
Siemens · Spectrum Power 7version=All versions using Shared HIS

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.4NIST NVDAV:A/AC:M/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
CAPEC-70Try Common or Default Usernames and Passwords
T1078.001Valid Accounts: Default Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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