How severe is CVE-2022-26476?

CVE-2022-26476 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-26476 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-26476?

CVE-2022-26476 primarily affects Siemens Spectrum Power 4. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-26476?

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-2022-26476 published?

CVE-2022-26476 was published on 2022-06-14 and last updated on 2026-06-17.

CVE-2022-26476

CVE-2022-26476 is a high-severity vulnerability in Siemens Spectrum Power 4 with a CVSS 3.x base score of 8.8. 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-798.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 5.4
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Siemens Spectrum Power 4
Published: 2022-06-14
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2022-26476?: 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.
How severe is CVE-2022-26476?: CVE-2022-26476 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-26476 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-26476?: CVE-2022-26476 primarily affects Siemens Spectrum Power 4. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-26476?: 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-2022-26476 published?: CVE-2022-26476 was published on 2022-06-14 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-388239.pdf

Affected products (3)

cpe:2.3:a:siemens:spectrum_power_4:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:spectrum_power_7:-:*:*:*:*:*:*:*
cpe:2.3:a:siemens:spectrum_power_microgrid_management_system:-:*:*:*:*:*:*:*

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