CVE-2026-54801: Siemens SICAM 8 privilege escalation in web API

CVE-2026-54801 · Severity: high · CVSS 7.2 · Published 2026-07-09

Siemens SICAM 8 power automation devices are affected by a security flaw in their administrative web interface. An attacker with existing high-level access could exploit this to modify account credentials without proper verification, potentially leading to full control over the device. This could impact the reliability and operation of critical electrical grid infrastructure.

Technologies: Siemens CPCI85 Central Processing/Communication, Siemens SICORE Base system. Vendors: Siemens.

Quick answers

Is CVE-2026-54801 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-54801 being exploited in the wild.
How severe is CVE-2026-54801?
High severity, with a CVSS score of 7.2, published 9 July 2026.
Which products and versions are affected?
Siemens CPCI85 Central Processing/Communication < V26.20; Siemens SICORE Base system < V26.20.0.
Is there a fix for CVE-2026-54801?
A patch was published on 2026-07-09. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-54801 attacked?
It is attacked over the network, in device firmware.
Am I affected by CVE-2026-54801?
Check whether you run Siemens CPCI85 Central Processing/Communication or Siemens SICORE Base system at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A vulnerability exists in the web API of Siemens CPCI85 and SICORE firmware used in SICAM 8 products. The application fails to sufficiently validate authentication credentials when processing administrative account modifications (CWE-620). An authenticated attacker with high privileges can exploit this flaw over the network to bypass security controls and gain further unauthorized elevated privileges or modify other administrative accounts. Siemens has released firmware version V26.20 (and V26.20.0 for SICORE) to remediate this issue.

Affected products

  • Siemens CPCI85 Central Processing/Communication < V26.20
  • Siemens SICORE Base system < V26.20.0

Timeline

  • 2026-07-09: disclosed
  • 2026-07-09: advisory
  • 2026-07-09: patched

References

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