CVE-2026-54798: Siemens SICAM 8 active debug code in CPCI85 and SICORE firmware

CVE-2026-54798 · Severity: medium · CVSS 6.5 · Published 2026-07-09

Siemens SICAM 8 power automation devices contain a debugging interface that was unintentionally left active in production firmware. An authenticated user could access this interface via the web to crash the device's web service, leading to a denial-of-service condition. This could disrupt the ability of operators to manage or monitor critical power grid infrastructure.

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

Quick answers

Is CVE-2026-54798 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-54798 being exploited in the wild.
How severe is CVE-2026-54798?
Medium severity, with a CVSS score of 6.5, published 9 July 2026.
Which products and versions are affected?
Siemens CPCI85 Central Processing/Communication All versions < V26.20; Siemens SICAM A8000 CP-8010/CP-8012 Firmware versions < V26.20.0; Siemens SICAM A8000 CP-8031/CP-8050 Firmware versions < V26.20; Siemens SICAM EGS Firmware versions < V26.20; and 2 more.
Is there a fix for CVE-2026-54798?
A patch was published on 2026-07-09: Fixes released in version V26.20 / V26.20.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-54798 attacked?
It is attacked over the network, in device firmware.
Am I affected by CVE-2026-54798?
Check whether you run Siemens CPCI85 Central Processing/Communication, Siemens SICAM A8000 CP-8010/CP-8012, Siemens SICAM A8000 CP-8031/CP-8050 or one of the others listed 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

This vulnerability is classified as Active Debug Code (CWE-489) within the CPCI85 and SICORE firmware components. The affected software exposes a debugging interface through HTTP endpoints that should not be accessible in production environments. An attacker with low-privileged network access can interact with these endpoints to trigger a crash of the web process. This results in a denial-of-service (DoS) condition for the web-based management interface. Siemens has addressed this in CPCI85 version V26.20 and SICORE version V26.20.0.

Affected products

  • Siemens CPCI85 Central Processing/Communication All versions < V26.20
  • Siemens SICORE Base system All versions < V26.20.0
  • Siemens SICAM A8000 CP-8031/CP-8050 Firmware versions < V26.20
  • Siemens SICAM A8000 CP-8010/CP-8012 Firmware versions < V26.20.0
  • Siemens SICAM EGS Firmware versions < V26.20
  • Siemens SICAM S8000 Firmware versions < V26.20.0

Timeline

  • 2026-07-09: advisory: Initial publication of SSA-229470 by Siemens ProductCERT
  • 2026-07-09: patched: Fixes released in version V26.20 / V26.20.0

References

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