SSA-868571

Vulnerability from csaf_siemens - Published: 2025-12-09 00:00 - Updated: 2026-03-10 00:00
Summary
SSA-868571: Missing Server Certificate Validation in IAM Client
Notes
Summary: Multiple Siemens products are affected by improper certificate validation in IAM Client. This could allow an unauthenticated remote attacker to perform man in the middle attacks. Siemens has released new versions for the affected products and recommends to update to the latest versions.
General Recommendations: As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
Additional Resources: For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: 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.
CVE-2025-40800
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE-295 - Improper Certificate Validation
Vendor Fix Update to V10.6.1 or later version https://support.sw.siemens.com/product/222981661/
Vendor Fix Update to V225.0 Update 10 or later version https://support.sw.siemens.com/product/246738425/
Vendor Fix Update to V226.0 Update 1 or later version https://support.sw.siemens.com/product/246738425/
Vendor Fix Update to V2412.8700 or later version https://support.sw.siemens.com/product/209349590/
Vendor Fix Update to V2506.0002 or later version https://support.sw.siemens.com/product/275652363/
Vendor Fix Update to V2506.6000 or later version https://support.sw.siemens.com/product/209349590/
Vendor Fix Update to V2506.6000 or later version https://support.sw.siemens.com/product/289054037/
References
To clipboard 

{
  "document": {
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    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited. (TLPv2: TLP:CLEAR)",
      "tlp": {
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    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Multiple Siemens products are affected by improper certificate validation in IAM Client. This could allow an unauthenticated remote attacker to perform man in the middle attacks.\n\nSiemens has released new versions for the affected products and recommends to update to the latest versions.",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens\u0027 operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\nAdditional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity",
        "title": "General Recommendations"
      },
      {
        "category": "general",
        "text": "For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
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      "name": "Siemens ProductCERT",
      "namespace": "https://www.siemens.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "SSA-868571: Missing Server Certificate Validation in IAM Client - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-868571.html"
      },
      {
        "category": "self",
        "summary": "SSA-868571: Missing Server Certificate Validation in IAM Client - CSAF Version",
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      }
    ],
    "title": "SSA-868571: Missing Server Certificate Validation in IAM Client",
    "tracking": {
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      "generator": {
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      "revision_history": [
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  },
  "product_tree": {
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          {
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  "vulnerabilities": [
    {
      "cve": "CVE-2025-40800",
      "cwe": {
        "id": "CWE-295",
        "name": "Improper Certificate Validation"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The IAM client in affected products is missing server certificate validation while establishing TLS connections to the authorization server. This could allow an attacker to perform a man-in-the-middle attack.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
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          "2",
          "3",
          "4",
          "5",
          "6",
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        ]
      },
      "remediations": [
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        },
        {
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      "scores": [
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          "products": [
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            "2",
            "3",
            "4",
            "5",
            "6",
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          ]
        }
      ],
      "title": "CVE-2025-40800"
    }
  ]
}


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  • 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.