ICSA-26-197-05

Vulnerability from csaf_cisa - Published: 2026-07-09 00:00 - Updated: 2026-07-16 06:00
Summary
Siemens SICAM 8
Notes
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.
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).
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.
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.
Recommended Practices: CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
Recommended Practices: 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.
Recommended Practices: 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.
Recommended Practices: Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
Critical infrastructure sectors: Critical Manufacturing, Energy
Countries/areas deployed: Worldwide
Company headquarters location: Germany
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.

6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-489 - Active Debug Code
Affected products
Product Identifier Version Remediation
CPCI85 Central Processing/Communication < V26.20
Siemens / CPCI85 Central Processing/Communication
 vers:intdot/<26.20
Vendor Fix
SICORE Base system < V26.20.0
Siemens / SICORE Base system
 vers:intdot/<26.20.0
Vendor Fix
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.

6.7 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE-489 - Active Debug Code
Affected products
Product Identifier Version Remediation
CPCI85 Central Processing/Communication < V26.20
Siemens / CPCI85 Central Processing/Communication
 vers:intdot/<26.20
Vendor Fix
SICORE Base system < V26.20.0
Siemens / SICORE Base system
 vers:intdot/<26.20.0
Vendor Fix
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.

4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE-1188 - Initialization of a Resource with an Insecure Default
Affected products
Product Identifier Version Remediation
CPCI85 Central Processing/Communication < V26.20
Siemens / CPCI85 Central Processing/Communication
 vers:intdot/<26.20
Vendor Fix
SICORE Base system < V26.20.0
Siemens / SICORE Base system
 vers:intdot/<26.20.0
Vendor Fix
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.

7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE-620 - Unverified Password Change
Affected products
Product Identifier Version Remediation
CPCI85 Central Processing/Communication < V26.20
Siemens / CPCI85 Central Processing/Communication
 vers:intdot/<26.20
Vendor Fix
SICORE Base system < V26.20.0
Siemens / SICORE Base system
 vers:intdot/<26.20.0
Vendor Fix
References
Acknowledgments
Siemens
To clipboard 

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        "text": "Multiple SICAM 8 products are affected by multiple vulnerabilities that could lead to denial of service, namely:\n\n- \nSICAM A8000 Device firmware\n\n- CPCI85 for CP-8031/CP-8050\n- SICORE for CP-8010/CP-8012 \n\n\n- \nSICAM EGS Device firmware\n\n- CPCI85\n\n\n- \nSICAM S8000\n\n- SICORE\n\n\n\nSiemens has released new versions for the affected products and recommends to update to the latest versions.",
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        {
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          "text": "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.",
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          "product_ids": [
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          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V26.20.0 or later version \n\nThe firmware SICORE V26.20.0 is present within \u201cCP-8010/CP-8012 Package\u201d V26.20\n\nhttps://support.industry.siemens.com/cs/ww/en/view/109972894/ and also within \u201cSICAM S8000  Package\u201d V26.20 \n\nhttps://support.industry.siemens.com/cs/document/109818240",
          "product_ids": [
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        }
      ],
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            "version": "3.1"
          },
          "products": [
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            "CSAFPID-0002"
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      "title": "CVE-2026-54798"
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      "cwe": {
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        "name": "Active Debug Code"
      },
      "notes": [
        {
          "category": "description",
          "text": "The affected application contains a vulnerability in its firmware update mechanism\u0027s signature validation process. This could allow an attacker to install malicious firmware, leading to persistent code execution and system compromise.",
          "title": "CVE Description"
        }
      ],
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          "url": "https://cwe.mitre.org/data/definitions/489.html"
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        }
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      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V26.20 or later version \n\nThe firmware CPCI85 V26.20 is present within \u201cCP-8031/CP-8050 Package\u201d V26.20\n\nhttps://support.industry.siemens.com/cs/ww/en/view/109804985/\n\nand also within \u201cSICAM EGS Package\u201d V26.20\n\nhttps://support.industry.siemens.com/cs/document/109972536/",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V26.20.0 or later version \n\nThe firmware SICORE V26.20.0 is present within \u201cCP-8010/CP-8012 Package\u201d V26.20\n\nhttps://support.industry.siemens.com/cs/ww/en/view/109972894/ and also within \u201cSICAM S8000  Package\u201d V26.20 \n\nhttps://support.industry.siemens.com/cs/document/109818240",
          "product_ids": [
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          ]
        }
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      "scores": [
        {
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            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ],
      "title": "CVE-2026-54799"
    },
    {
      "cve": "CVE-2026-54800",
      "cwe": {
        "id": "CWE-1188",
        "name": "Initialization of a Resource with an Insecure Default"
      },
      "notes": [
        {
          "category": "description",
          "text": "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.",
          "title": "CVE Description"
        }
      ],
      "product_status": {
        "known_affected": [
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          "url": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V26.20 or later version \n\nThe firmware CPCI85 V26.20 is present within \u201cCP-8031/CP-8050 Package\u201d V26.20\n\nhttps://support.industry.siemens.com/cs/ww/en/view/109804985/\n\nand also within \u201cSICAM EGS Package\u201d V26.20\n\nhttps://support.industry.siemens.com/cs/document/109972536/",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V26.20.0 or later version \n\nThe firmware SICORE V26.20.0 is present within \u201cCP-8010/CP-8012 Package\u201d V26.20\n\nhttps://support.industry.siemens.com/cs/ww/en/view/109972894/ and also within \u201cSICAM S8000  Package\u201d V26.20 \n\nhttps://support.industry.siemens.com/cs/document/109818240",
          "product_ids": [
            "CSAFPID-0002"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ],
      "title": "CVE-2026-54800"
    },
    {
      "cve": "CVE-2026-54801",
      "cwe": {
        "id": "CWE-620",
        "name": "Unverified Password Change"
      },
      "notes": [
        {
          "category": "description",
          "text": "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.",
          "title": "CVE Description"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "www.cve.org",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-54801"
        },
        {
          "category": "external",
          "summary": "cwe.mitre.org",
          "url": "https://cwe.mitre.org/data/definitions/620.html"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V26.20 or later version \n\nThe firmware CPCI85 V26.20 is present within \u201cCP-8031/CP-8050 Package\u201d V26.20\n\nhttps://support.industry.siemens.com/cs/ww/en/view/109804985/\n\nand also within \u201cSICAM EGS Package\u201d V26.20\n\nhttps://support.industry.siemens.com/cs/document/109972536/",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V26.20.0 or later version \n\nThe firmware SICORE V26.20.0 is present within \u201cCP-8010/CP-8012 Package\u201d V26.20\n\nhttps://support.industry.siemens.com/cs/ww/en/view/109972894/ and also within \u201cSICAM S8000  Package\u201d V26.20 \n\nhttps://support.industry.siemens.com/cs/document/109818240",
          "product_ids": [
            "CSAFPID-0002"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ],
      "title": "CVE-2026-54801"
    }
  ]
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.