SSA-339086

Vulnerability from csaf_siemens - Published: 2025-05-13 00:00 - Updated: 2025-05-13 00:00
Summary
SSA-339086: Insufficient Session Expiration Vulnerability in SIMATIC PCS neo
Notes
Summary: Affected products do not correctly invalidate user sessions upon user logout. This could allow a remote unauthenticated attacker, who has obtained the session token by other means, to re-use a legitimate user's session even after logout. 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-2025-40566
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-613 - Insufficient Session Expiration
Affected products
Product Identifier Version Remediation
SIMATIC PCS neo V4.1
Siemens / SIMATIC PCS neo V4.1
 All versions < V4.1 Update 3
Vendor Fix fix
SIMATIC PCS neo V5.0
Siemens / SIMATIC PCS neo V5.0
 All versions < V5.0 Update 1
Vendor Fix fix
References
To clipboard 

{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited. (TLPv2: TLP:CLEAR)",
      "tlp": {
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      }
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    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Affected products do not correctly invalidate user sessions upon user logout. This could allow a remote unauthenticated attacker, who has obtained the session token by other means, to re-use a legitimate user\u0027s session even after logout.\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: \nhttps://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": {
      "category": "vendor",
      "contact_details": "productcert@siemens.com",
      "name": "Siemens ProductCERT",
      "namespace": "https://www.siemens.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "SSA-339086: Insufficient Session Expiration Vulnerability in SIMATIC PCS neo - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-339086.html"
      },
      {
        "category": "self",
        "summary": "SSA-339086: Insufficient Session Expiration Vulnerability in SIMATIC PCS neo - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-339086.json"
      }
    ],
    "title": "SSA-339086: Insufficient Session Expiration Vulnerability in SIMATIC PCS neo",
    "tracking": {
      "current_release_date": "2025-05-13T00:00:00Z",
      "generator": {
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          "version": "1"
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      },
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      "revision_history": [
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          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        }
      ],
      "status": "interim",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003c V4.1 Update 3",
                "product": {
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                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC PCS neo V4.1"
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          {
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                "product": {
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              }
            ],
            "category": "product_name",
            "name": "SIMATIC PCS neo V5.0"
          }
        ],
        "category": "vendor",
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      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-40566",
      "cwe": {
        "id": "CWE-613",
        "name": "Insufficient Session Expiration"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Affected products do not correctly invalidate user sessions upon user logout. This could allow a remote unauthenticated attacker, who has obtained the session token by other means, to re-use a legitimate user\u0027s session even after logout.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update to V4.1 Update 3 or later version",
          "product_ids": [
            "1"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109978820/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V5.0 Update 1 or later version",
          "product_ids": [
            "2"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109977244/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
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            "2"
          ]
        }
      ],
      "title": "CVE-2025-40566"
    }
  ]
}



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