SSA-628843

Vulnerability from csaf_siemens - Published: 2026-04-14 00:00 - Updated: 2026-04-14 00:00
Summary
SSA-628843: Out of Bound Read Vulnerability in TPM 2.0
Notes
Summary: The products listed below contain a vulnerability that could allow an attacker to perform an out-of-bound read, potentially leading to information disclosure or denial of service of the TPM. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends countermeasures for products where fixes are not, or not yet available.
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-2025-2884
6.6 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H
CWE-125 - Out-of-bounds Read
Affected products
Product Identifier Version Remediation
SIMATIC CN 4100
Siemens / SIMATIC CN 4100
 vers:all/*
No Fix Planned
SIMATIC Field PG M5
Siemens / SIMATIC Field PG M5
 vers:all/*
None Available
SIMATIC Field PG M6
Siemens / SIMATIC Field PG M6
 vers:all/*
None Available
SIMATIC IPC BX-32A
Siemens / SIMATIC IPC BX-32A
 vers:intdot/<29.01.09
Vendor Fix fix
SIMATIC IPC BX-39A
Siemens / SIMATIC IPC BX-39A
 vers:intdot/<29.01.09
Vendor Fix fix
SIMATIC IPC BX-56A
Siemens / SIMATIC IPC BX-56A
 vers:intdot/<32.01.09
Vendor Fix fix
SIMATIC IPC BX-59A
Siemens / SIMATIC IPC BX-59A
 vers:intdot/<32.01.09
Vendor Fix fix
SIMATIC IPC MD-57A
Siemens / SIMATIC IPC MD-57A
 vers:intdot/<30.01.10
Vendor Fix fix
SIMATIC IPC PX-32A
Siemens / SIMATIC IPC PX-32A
 vers:intdot/<29.01.09
Vendor Fix fix
SIMATIC IPC PX-39A
Siemens / SIMATIC IPC PX-39A
 vers:intdot/<29.01.09
Vendor Fix fix
SIMATIC IPC PX-39A PRO
Siemens / SIMATIC IPC PX-39A PRO
 vers:intdot/<29.01.09
Vendor Fix fix
SIMATIC IPC RW-528A
Siemens / SIMATIC IPC RW-528A
 vers:intdot/<34.01.02
Vendor Fix fix
SIMATIC IPC RW-548A
Siemens / SIMATIC IPC RW-548A
 vers:intdot/<34.01.02
Vendor Fix fix
SIMATIC IPC227E
Siemens / SIMATIC IPC227E
 vers:all/*
No Fix Planned
SIMATIC IPC277E
Siemens / SIMATIC IPC277E
 vers:all/*
No Fix Planned
SIMATIC IPC427E
Siemens / SIMATIC IPC427E
 vers:intdot/<21.01.20
Vendor Fix fix
SIMATIC IPC477E
Siemens / SIMATIC IPC477E
 vers:intdot/<21.01.20
Vendor Fix fix
SIMATIC IPC477E PRO
Siemens / SIMATIC IPC477E PRO
 vers:intdot/<21.01.20
Vendor Fix fix
SIMATIC IPC627E
Siemens / SIMATIC IPC627E
 vers:all/*
None Available
SIMATIC IPC647E
Siemens / SIMATIC IPC647E
 vers:all/*
None Available
SIMATIC IPC677E
Siemens / SIMATIC IPC677E
 vers:all/*
None Available
SIMATIC IPC847E
Siemens / SIMATIC IPC847E
 vers:all/*
None Available
SIMATIC ITP1000
Siemens / SIMATIC ITP1000
 vers:all/*
None Available
SIPLUS IPC427E
Siemens / SIPLUS IPC427E
 vers:intdot/<21.01.20
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": {
        "label": "WHITE"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "The products listed below contain a vulnerability that could allow an attacker to perform an out-of-bound read, potentially leading to information disclosure or denial of service of the TPM.\n\nSiemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends countermeasures for products where fixes are not, or not yet available.",
        "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": {
      "category": "vendor",
      "contact_details": "productcert@siemens.com",
      "name": "Siemens ProductCERT",
      "namespace": "https://www.siemens.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "SSA-628843: Out of Bound Read Vulnerability in TPM 2.0 - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-628843.html"
      },
      {
        "category": "self",
        "summary": "SSA-628843: Out of Bound Read Vulnerability in TPM 2.0 - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-628843.json"
      }
    ],
    "title": "SSA-628843: Out of Bound Read Vulnerability in TPM 2.0",
    "tracking": {
      "current_release_date": "2026-04-14T00:00:00.000Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-628843",
      "initial_release_date": "2026-04-14T00:00:00.000Z",
      "revision_history": [
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          "legacy_version": "1.0",
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      "status": "interim",
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          {
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-2884",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "notes": [
        {
          "category": "summary",
          "text": "TCG TPM2.0 Reference implementation\u0027s CryptHmacSign helper function is vulnerable to Out-of-Bounds read due to the lack of validation the signature scheme with the signature key\u0027s algorithm. See Errata Revision 1.83 and advisory TCGVRT0009 for TCG standard TPM2.0",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5",
          "6",
          "7",
          "8",
          "9",
          "10",
          "11",
          "12",
          "13",
          "14",
          "15",
          "16",
          "17",
          "18",
          "19",
          "20",
          "21",
          "22",
          "23",
          "24"
        ]
      },
      "remediations": [
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "1",
            "14",
            "15"
          ]
        },
        {
          "category": "none_available",
          "details": "Currently no fix is available",
          "product_ids": [
            "2",
            "3",
            "19",
            "20",
            "21",
            "22",
            "23"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V21.01.20 or later version",
          "product_ids": [
            "16",
            "17",
            "18",
            "24"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109763408/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V29.01.09 or later version",
          "product_ids": [
            "4",
            "5",
            "9",
            "10",
            "11"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109763408/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V30.01.10 or later version",
          "product_ids": [
            "8"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109763408/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V32.01.09 or later version",
          "product_ids": [
            "6",
            "7"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109763408/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V34.01.02 or later version",
          "product_ids": [
            "12",
            "13"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109763408/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.6,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6",
            "7",
            "8",
            "9",
            "10",
            "11",
            "12",
            "13",
            "14",
            "15",
            "16",
            "17",
            "18",
            "19",
            "20",
            "21",
            "22",
            "23",
            "24"
          ]
        }
      ],
      "title": "CVE-2025-2884"
    }
  ]
}


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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.