Vulnerability-Lookup

CNVD-2026-29397

Vulnerability from cnvd - Published: 2026-07-28

Title

Siemens Opcenter X令牌失效漏洞

Description

Siemens Opcenter X是德国Siemens公司的一款工业运营管理和制造执行系统。 Siemens Opcenter X存在令牌失效漏洞，攻击者可利用该漏洞伪造任意JWT，绕过身份验证机制并冒充任何用户（包括管理账户），从而获得对应用程序的完全未授权访问。

Severity

高

Patch Name

Siemens Opcenter X令牌失效漏洞的补丁

Patch Description

Siemens Opcenter X是德国Siemens公司的一款工业运营管理和制造执行系统。 Siemens Opcenter X存在令牌失效漏洞，攻击者可利用该漏洞伪造任意JWT，绕过身份验证机制并冒充任何用户（包括管理账户），从而获得对应用程序的完全未授权访问。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://cert-portal.siemens.com/productcert/html/ssa-096828.html

Reference

https://cert-portal.siemens.com/productcert/html/ssa-096828.html

Impacted products

Name
SIEMENS Opcenter X <V2604

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-56451",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-56451"
    }
  },
  "description": "Siemens Opcenter X\u662f\u5fb7\u56fdSiemens\u516c\u53f8\u7684\u4e00\u6b3e\u5de5\u4e1a\u8fd0\u8425\u7ba1\u7406\u548c\u5236\u9020\u6267\u884c\u7cfb\u7edf\u3002\n\nSiemens Opcenter X\u5b58\u5728\u4ee4\u724c\u5931\u6548\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4f2a\u9020\u4efb\u610fJWT\uff0c\u7ed5\u8fc7\u8eab\u4efd\u9a8c\u8bc1\u673a\u5236\u5e76\u5192\u5145\u4efb\u4f55\u7528\u6237\uff08\u5305\u62ec\u7ba1\u7406\u8d26\u6237\uff09\uff0c\u4ece\u800c\u83b7\u5f97\u5bf9\u5e94\u7528\u7a0b\u5e8f\u7684\u5b8c\u5168\u672a\u6388\u6743\u8bbf\u95ee\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://cert-portal.siemens.com/productcert/html/ssa-096828.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-29397",
  "openTime": "2026-07-28",
  "patchDescription": "Siemens Opcenter X\u662f\u5fb7\u56fdSiemens\u516c\u53f8\u7684\u4e00\u6b3e\u5de5\u4e1a\u8fd0\u8425\u7ba1\u7406\u548c\u5236\u9020\u6267\u884c\u7cfb\u7edf\u3002\r\n\r\nSiemens Opcenter X\u5b58\u5728\u4ee4\u724c\u5931\u6548\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u4f2a\u9020\u4efb\u610fJWT\uff0c\u7ed5\u8fc7\u8eab\u4efd\u9a8c\u8bc1\u673a\u5236\u5e76\u5192\u5145\u4efb\u4f55\u7528\u6237\uff08\u5305\u62ec\u7ba1\u7406\u8d26\u6237\uff09\uff0c\u4ece\u800c\u83b7\u5f97\u5bf9\u5e94\u7528\u7a0b\u5e8f\u7684\u5b8c\u5168\u672a\u6388\u6743\u8bbf\u95ee\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Siemens Opcenter X\u4ee4\u724c\u5931\u6548\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "SIEMENS Opcenter X \u003cV2604"
  },
  "referenceLink": "https://cert-portal.siemens.com/productcert/html/ssa-096828.html",
  "serverity": "\u9ad8",
  "submitTime": "2026-07-15",
  "title": "Siemens Opcenter X\u4ee4\u724c\u5931\u6548\u6f0f\u6d1e"
}

CVE-2026-56451 (GCVE-0-2026-56451)

Vulnerability from cvelistv5 – Published: 2026-07-14 09:19 – Updated: 2026-07-14 14:30

Summary

A vulnerability has been identified in Opcenter X (All versions < V2604). Affected applications do not properly validate the algorithm specified in the JSON Web Token (JWT) header. This could allow an unauthenticated remote attacker to forge arbitrary JWT, bypass authentication mechanisms and impersonate any user including administrative accounts, potentially gaining full unauthorized access to the application.

Severity

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

10 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:H/SA:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-14 14:26 UTC

CWE

CWE-347 - Improper Verification of Cryptographic Signature

Assigner

siemens icscert root

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	Opcenter X	Affected: 0 , < V2604 (custom)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-56451",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-14T14:26:36.589186Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-14T14:30:15.376Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Opcenter X",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "V2604",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability has been identified in Opcenter X (All versions \u003c V2604). Affected applications do not properly validate the algorithm specified in the JSON Web Token (JWT) header.\r\nThis could allow an unauthenticated remote attacker to forge arbitrary JWT, bypass authentication mechanisms and impersonate any user including administrative accounts, potentially gaining full unauthorized access to the application."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        {
          "cvssV4_0": {
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:H/SA:H",
            "version": "4.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-347",
              "description": "CWE-347: Improper Verification of Cryptographic Signature",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-14T09:19:18.322Z",
        "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
        "shortName": "siemens"
      },
      "references": [
        {
          "url": "https://cert-portal.siemens.com/productcert/html/ssa-096828.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
    "assignerShortName": "siemens",
    "cveId": "CVE-2026-56451",
    "datePublished": "2026-07-14T09:19:18.322Z",
    "dateReserved": "2026-06-22T13:17:54.241Z",
    "dateUpdated": "2026-07-14T14:30:15.376Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.