VDE-2026-070

Vulnerability from csaf_helmholzgmbhcokg - Published: 2026-06-23 11:00 - Updated: 2026-06-23 12:00
Summary
Helmholz: Authenticated unintended access to critical program parameters in myREX24V2/myREX24V2.virtual
Severity
High
Notes
Summary: There is a vulnerability in myREX24V2/myREX24V2.virtual that allows an authenticated remote attacker to access a hidden configuration method, that should not be accessible by any user, to modify critical program parameters.
Impact: CVE-2026-10521 allows an authenticated remote attacker to modify critical program parameters. This can result in a total loss of confidentiality, integrity and availability.
Remediation: Update the myREX24V2/myREX24V2.virtual instance to version 2.20.2.
Disclaimer: Helmholz shall not be held responsible for any indirect, incidental, special, or consequential damages arising from the distribution or use of this document, or from any actions taken in reliance upon its contents. The information contained herein is provided by Helmholz in good faith and free of charge. To the extent permitted under applicable law, such information does not constitute any representation, warranty, guarantee, contractual commitment, or legal obligation on the part of Helmholz. Users remain solely responsible for evaluating the suitability and impact of the information on their specific systems or installations prior to implementation. If any adverse effects are identified, the information must not be applied.
CVE-2026-10521

An authenticated remote attacker can access a hidden configuration method, that should not be accessible by any user, to modify critical program parameters. This can result in a total loss of confidentiality, integrity and availability.

7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE-425 - Direct Request ('Forced Browsing')
Vendor Fix Update the myREX24V2/myREX24V2.virtual instance to version 2.20.2.
Affected products
Product Identifier Version Remediation
Unresolved product id: CSAFPID-31005 —
Unresolved product id: CSAFPID-31006 —
Product Identifier Version Remediation
Unresolved product id: CSAFPID-31001 —
Unresolved product id: CSAFPID-31002 —
Unresolved product id: CSAFPID-31003 —
Unresolved product id: CSAFPID-31004 —
References
Acknowledgments
CERT@VDE certvde.com
To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "organization": "CERT@VDE",
        "summary": "coordination",
        "urls": [
          "https://certvde.com"
        ]
      }
    ],
    "aggregate_severity": {
      "namespace": "https://www.first.org/cvss/v3.1/specification-document#Qualitative-Severity-Rating-Scale",
      "text": "High"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-GB",
    "notes": [
      {
        "category": "summary",
        "text": "There is a vulnerability in myREX24V2/myREX24V2.virtual that allows an authenticated remote attacker to access a hidden configuration method, that should not be accessible by any user, to modify critical program parameters.",
        "title": "Summary"
      },
      {
        "category": "description",
        "text": "CVE-2026-10521 allows an authenticated remote attacker to modify critical program parameters. This can result in a total loss of confidentiality, integrity and availability.",
        "title": "Impact"
      },
      {
        "category": "description",
        "text": "Update the myREX24V2/myREX24V2.virtual instance to version 2.20.2.\n",
        "title": "Remediation"
      },
      {
        "category": "legal_disclaimer",
        "text": "Helmholz shall not be held responsible for any indirect, incidental, special, or consequential damages arising from the distribution or use of this document, or from any actions taken in reliance upon its contents. The information contained herein is provided by Helmholz in good faith and free of charge. To the extent permitted under applicable law, such information does not constitute any representation, warranty, guarantee, contractual commitment, or legal obligation on the part of Helmholz. Users remain solely responsible for evaluating the suitability and impact of the information on their specific systems or installations prior to implementation. If any adverse effects are identified, the information must not be applied.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@helmholz.de",
      "name": "Helmholz GmbH \u0026 Co. KG",
      "namespace": "https://www.helmholz.de"
    },
    "references": [
      {
        "category": "external",
        "summary": "CERT@VDE Security Advisories for helmholz",
        "url": "https://certvde.com/en/advisories/vendor/helmholz"
      },
      {
        "category": "self",
        "summary": "VDE-2026-070: Helmholz: Authenticated unintended access to critical program parameters in myREX24V2/myREX24V2.virtual - HTML",
        "url": "https://certvde.com/en/advisories/VDE-2026-070"
      },
      {
        "category": "self",
        "summary": "VDE-2026-070: Helmholz: Authenticated unintended access to critical program parameters in myREX24V2/myREX24V2.virtual - CSAF",
        "url": "https://helmholz.csaf-tp.certvde.com/.well-known/csaf/white/2026/vde-2026-070.json"
      }
    ],
    "title": "Helmholz: Authenticated unintended access to critical program parameters in myREX24V2/myREX24V2.virtual",
    "tracking": {
      "aliases": [
        "VDE-2026-070",
        "SIM#2026-04"
      ],
      "current_release_date": "2026-06-23T12:00:00.000Z",
      "generator": {
        "date": "2026-06-23T07:40:26.373Z",
        "engine": {
          "name": "Secvisogram",
          "version": "2.5.44"
        }
      },
      "id": "VDE-2026-070",
      "initial_release_date": "2026-06-23T11:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-06-23T11:00:00.000Z",
          "number": "1.0.0",
          "summary": "Initial revision."
        },
        {
          "date": "2026-06-23T12:00:00.000Z",
          "number": "1.0.1",
          "summary": "The alias has been corrected"
        }
      ],
      "status": "final",
      "version": "1.0.1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_family",
                "name": "myREX24V2",
                "product": {
                  "name": "Helmholz myREX24V2",
                  "product_id": "CSAFPID-11001",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:h:helmholz:myREX24V2:*:*:*:*:*:*:*:*"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "myREX24V2.virtual",
                "product": {
                  "name": "Helmholz myREX24V2.virtual",
                  "product_id": "CSAFPID-11002",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:h:helmholz:myREX24V2virtual:*:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Hardware"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:semver/\u003c2.20.2",
                "product": {
                  "name": "Firmware \u003c2.20.2",
                  "product_id": "CSAFPID-21001"
                }
              },
              {
                "category": "product_version",
                "name": "2.20.2",
                "product": {
                  "name": "Firmware 2.20.2",
                  "product_id": "CSAFPID-21002",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:helmholz:myREX24V2_firmware:2.20.2:*:*:*:*:*:*:*"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "2.20.1",
                "product": {
                  "name": "Firmware 2.20.1",
                  "product_id": "CSAFPID-21003",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:helmholz:myREX24V2_firmware:2.20.1:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Firmware"
          }
        ],
        "category": "vendor",
        "name": "Helmholz"
      }
    ],
    "product_groups": [
      {
        "group_id": "CSAFGID-0001",
        "product_ids": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003",
          "CSAFPID-31004"
        ],
        "summary": "Affected products."
      },
      {
        "group_id": "CSAFGID-0002",
        "product_ids": [
          "CSAFPID-31005",
          "CSAFPID-31006"
        ],
        "summary": "Fixed products."
      }
    ],
    "relationships": [
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c=2.20.2 installed on Helmholz myREX24V2",
          "product_id": "CSAFPID-31001"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11001"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c=2.20.2 installed on Helmholz myREX24V2.virtual",
          "product_id": "CSAFPID-31002"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11002"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware 2.20.1 installed on Helmholz myREX24V2",
          "product_id": "CSAFPID-31003",
          "product_identification_helper": {
            "cpe": "cpe:2.3:o:helmholz:myREX24V2:2.20.1:*:*:*:*:*:*:*"
          }
        },
        "product_reference": "CSAFPID-21003",
        "relates_to_product_reference": "CSAFPID-11001"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware 2.20.1 installed on Helmholz myREX24V2.virtual",
          "product_id": "CSAFPID-31004",
          "product_identification_helper": {
            "cpe": "cpe:2.3:o:helmholz:myREX24V2virtual:2.20.1:*:*:*:*:*:*:*"
          }
        },
        "product_reference": "CSAFPID-21003",
        "relates_to_product_reference": "CSAFPID-11002"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware 2.20.2 installed on Helmholz myREX24V2",
          "product_id": "CSAFPID-31005",
          "product_identification_helper": {
            "cpe": "cpe:2.3:o:helmholz:myREX24V2:2.20.2:*:*:*:*:*:*:*"
          }
        },
        "product_reference": "CSAFPID-21002",
        "relates_to_product_reference": "CSAFPID-11001"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware 2.20.2 installed on Helmholz myREX24V2.virtual",
          "product_id": "CSAFPID-31006",
          "product_identification_helper": {
            "cpe": "cpe:2.3:o:helmholz:myREX24V2virtual:2.20.2:*:*:*:*:*:*:*"
          }
        },
        "product_reference": "CSAFPID-21002",
        "relates_to_product_reference": "CSAFPID-11002"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-10521",
      "cwe": {
        "id": "CWE-425",
        "name": "Direct Request (\u0027Forced Browsing\u0027)"
      },
      "notes": [
        {
          "audience": "all",
          "category": "description",
          "text": "An authenticated remote attacker can access a hidden configuration method, that should not be accessible by any user, to modify critical program parameters. This can result in a total loss of confidentiality, integrity and availability.",
          "title": "CVE Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-31005",
          "CSAFPID-31006"
        ],
        "known_affected": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003",
          "CSAFPID-31004"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - 8.6 / High",
          "url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Update the myREX24V2/myREX24V2.virtual instance to version 2.20.2.",
          "group_ids": [
            "CSAFGID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 7.2,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "temporalScore": 7.2,
            "temporalSeverity": "HIGH",
            "userInteraction": "NONE",
            "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-31001",
            "CSAFPID-31002",
            "CSAFPID-31003",
            "CSAFPID-31004"
          ]
        }
      ],
      "title": "Authenticated unintended access to critical program parameters"
    }
  ]
}


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Sightings

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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.