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Siemens SICAM 8

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Overview

Siemens has identified multiple vulnerabilities in its SICAM 8 product line, which could lead to denial of service and other security risks. The affected products include the CPCI85 Central Processing/Communication and SICORE Base system versions prior to 26.20.0. These vulnerabilities could allow attackers to disrupt services, install malicious firmware, or gain unauthorized access to critical system functions. Siemens has released updates for the affected products and strongly advises users to upgrade to the latest versions to mitigate these risks. This is particularly important for operators in critical infrastructure sectors like energy and manufacturing, where such vulnerabilities could have serious implications.

Key Takeaways

  • Affected Systems: Affected products include SICAM A8000 Device firmware, CPCI85 for CP-8031/CP-8050, SICORE for CP-8010/CP-8012, SICAM EGS Device firmware, SICAM S8000, and SICORE. Versions affected are CPCI85 Central Processing/Communication < V26.20 and SICORE Base system < V26.20.0.
  • Action Required: Users should update to CPCI85 V26.
  • Timeline: Newly disclosed

Original Article Summary

View CSAF Summary Multiple SICAM 8 products are affected by multiple vulnerabilities that could lead to denial of service, namely: - SICAM A8000 Device firmware - CPCI85 for CP-8031/CP-8050 - SICORE for CP-8010/CP-8012 - SICAM EGS Device firmware - CPCI85 - SICAM S8000 - SICORE Siemens has released new versions for the affected products and recommends to update to the latest versions. The following versions of Siemens SICAM 8 are affected: CPCI85 Central Processing/Communication vers:intdot/<26.20 (CVE-2026-54798, CVE-2026-54799, CVE-2026-54800, CVE-2026-54801) SICORE Base system vers:intdot/<26.20.0 (CVE-2026-54798, CVE-2026-54799, CVE-2026-54800, CVE-2026-54801) CVSS Vendor Equipment Vulnerabilities v3 7.2 Siemens Siemens SICAM 8 Active Debug Code, Initialization of a Resource with an Insecure Default, Unverified Password Change Background Critical Infrastructure Sectors: Critical Manufacturing, Energy Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Vulnerabilities Expand All + CVE-2026-54798 The affected application includes a debugging interface that is accessible through HTTP endpoints. This could allow an authenticated attacker to disrupt the system by crashing the web process causing denial of service conditions. View CVE Details Affected Products Siemens SICAM 8 Vendor: Siemens Product Version: CPCI85 Central Processing/Communication < V26.20, SICORE Base system < V26.20.0 Product Status: known_affected Remediations Vendor fix Update to V26.20 or later version The firmware CPCI85 V26.20 is present within “CP-8031/CP-8050 Package” V26.20 https://support.industry.siemens.com/cs/ww/en/view/109804985/ and also within “SICAM EGS Package” V26.20 https://support.industry.siemens.com/cs/document/109972536/ Vendor fix Update to V26.20.0 or later version The firmware SICORE V26.20.0 is present within “CP-8010/CP-8012 Package” V26.20 https://support.industry.siemens.com/cs/ww/en/view/109972894/ and also within “SICAM S8000 Package” V26.20 https://support.industry.siemens.com/cs/document/109818240 Relevant CWE: CWE-489 Active Debug Code Metrics CVSS Version Base Score Base Severity Vector String 3.1 6.5 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2026-54799 The affected application contains a vulnerability in its firmware update mechanism's signature validation process. This could allow an attacker to install malicious firmware, leading to persistent code execution and system compromise. View CVE Details Affected Products Siemens SICAM 8 Vendor: Siemens Product Version: CPCI85 Central Processing/Communication < V26.20, SICORE Base system < V26.20.0 Product Status: known_affected Remediations Vendor fix Update to V26.20 or later version The firmware CPCI85 V26.20 is present within “CP-8031/CP-8050 Package” V26.20 https://support.industry.siemens.com/cs/ww/en/view/109804985/ and also within “SICAM EGS Package” V26.20 https://support.industry.siemens.com/cs/document/109972536/ Vendor fix Update to V26.20.0 or later version The firmware SICORE V26.20.0 is present within “CP-8010/CP-8012 Package” V26.20 https://support.industry.siemens.com/cs/ww/en/view/109972894/ and also within “SICAM S8000 Package” V26.20 https://support.industry.siemens.com/cs/document/109818240 Relevant CWE: CWE-489 Active Debug Code Metrics CVSS Version Base Score Base Severity Vector String 3.1 6.7 MEDIUM CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2026-54800 The affected application ships with a default configuration that disables all OPC UA security mechanisms. This could allow an attacker to gain unauthorized access and control over critical system functions. View CVE Details Affected Products Siemens SICAM 8 Vendor: Siemens Product Version: CPCI85 Central Processing/Communication < V26.20, SICORE Base system < V26.20.0 Product Status: known_affected Remediations Vendor fix Update to V26.20 or later version The firmware CPCI85 V26.20 is present within “CP-8031/CP-8050 Package” V26.20 https://support.industry.siemens.com/cs/ww/en/view/109804985/ and also within “SICAM EGS Package” V26.20 https://support.industry.siemens.com/cs/document/109972536/ Vendor fix Update to V26.20.0 or later version The firmware SICORE V26.20.0 is present within “CP-8010/CP-8012 Package” V26.20 https://support.industry.siemens.com/cs/ww/en/view/109972894/ and also within “SICAM S8000 Package” V26.20 https://support.industry.siemens.com/cs/document/109818240 Relevant CWE: CWE-1188 Initialization of a Resource with an Insecure Default Metrics CVSS Version Base Score Base Severity Vector String 3.1 4.8 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2026-54801 The affected application contains insufficient validation of authentication credentials when processing administrative account modifications through the web API. This could allow an authenticated attacker to bypass security controls and gain unauthorized elevated privileges. View CVE Details Affected Products Siemens SICAM 8 Vendor: Siemens Product Version: CPCI85 Central Processing/Communication < V26.20, SICORE Base system < V26.20.0 Product Status: known_affected Remediations Vendor fix Update to V26.20 or later version The firmware CPCI85 V26.20 is present within “CP-8031/CP-8050 Package” V26.20 https://support.industry.siemens.com/cs/ww/en/view/109804985/ and also within “SICAM EGS Package” V26.20 https://support.industry.siemens.com/cs/document/109972536/ Vendor fix Update to V26.20.0 or later version The firmware SICORE V26.20.0 is present within “CP-8010/CP-8012 Package” V26.20 https://support.industry.siemens.com/cs/ww/en/view/109972894/ and also within “SICAM S8000 Package” V26.20 https://support.industry.siemens.com/cs/document/109818240 Relevant CWE: CWE-620 Unverified Password Change Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.2 HIGH CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Acknowledgments Siemens reported these vulnerabilities to CISA. General Recommendations Operators of critical power systems (e.g. TSOs or DSOs) worldwide are usually required by regulations to build resilience into the power grids by applying multi-level redundant secondary protection schemes. It is therefore recommended that the operators check whether appropriate resilient protection measures are in place. The risk of cyber incidents impacting the grid's reliability can thus be minimized by virtue of the grid design. Siemens strongly recommends applying the provided security updates using the corresponding tooling and documented procedures made available with the product. If supported by the product, an automated means to apply the security updates across multiple product instances may be used. Siemens strongly recommends prior validation of any security update before being applied, and supervision by trained staff of the update process in the target environment. As a general security measure Siemens strongly recommends to protect network access with appropriate mechanisms (e.g. firewalls, segmentation, VPN). It is advised to configure the environment according to our operational guidelines in order to run the devices in a protected IT environment. Recommended security guidelines can be found at: https://www.siemens.com/gridsecurity Additional Resources For further inquiries on security vulnerabilities in Siemens products and solutions, please contact Siemens: https://www.siemens.com/cert/advisories Terms of Use The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use. Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability. Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolate them from business networks. When remote access is required, use more secure methods, such as virtual private networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most recent version available. Also recognize VPN is only as secure as its connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. Advisory Conversion Disclaimer This ICSA is a verbatim republication of Siemens SSA-229470 from a direct conversion of the vendor's Common Security Advisory Framework (CSAF) advisory. This is republished to CISA's website as a means of increasing visibility and is provided "as-is" for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA does not endorse any commercial product or service. Please contact Siemens directly for any questions regarding this advisory. Revision History Initial Release Date: 2026-07-09 Date Revision Summary 2026-07-09 1 Publication Date 2026-07-16 2 Initial CISA Republication of Siemens SSA-229470 advisory Legal Notice and Terms of Use

Impact

Affected products include SICAM A8000 Device firmware, CPCI85 for CP-8031/CP-8050, SICORE for CP-8010/CP-8012, SICAM EGS Device firmware, SICAM S8000, and SICORE. Versions affected are CPCI85 Central Processing/Communication < V26.20 and SICORE Base system < V26.20.0.

Exploitation Status

No active exploitation has been reported at this time. However, organizations should still apply patches promptly as proof-of-concept code may exist.

Timeline

Newly disclosed

Remediation

Users should update to CPCI85 V26.20 or later and SICORE V26.20.0 or later. Specific package updates include the 'CP-8031/CP-8050 Package' V26.20 and 'SICAM EGS Package' V26.20 for CPCI85, and 'CP-8010/CP-8012 Package' V26.20 and 'SICAM S8000 Package' V26.20 for SICORE.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Vulnerability, Patch, and 2 more.

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