Vulnerability-Lookup

VDE-2020-042

Vulnerability from csaf_wagogmbhcokg - Published: 2020-10-27 10:28 - Updated: 2025-05-14 13:00

Summary

WAGO: PLC families 750-88x and 750-352 prone to DoS attack, versions < FW10 (Update A)

Notes

Summary: The Web-Based Management (WBM) of WAGOs programmable logic controller (PLC) is typically used for administration, commissioning and updates. Older firmware versions of the PLC family 750-88x and 750-352 are vulnerable for a special denial of service attack. All newer Firmware releases since FW11, released in December 2017, are not affected.

Impact: An attacker which sends a series of maliciously constructed packets to HTTP(S) ports 80/443 could cause a crashed device, that needs a power on reset to go back to normal operation.

Mitigation: * Restrict network access to the device. * Do not directly connect the device to the internet * Disable unused TCP/UDP-ports

Remediation: Update the device to the latest FW version available here: https://www.wago.com/us/requestDownload?downloadFile=FWMedia_58_750-881

CVE-2020-12516

Older firmware versions (FW1 up to FW10) of the WAGO PLC family 750-88x and 750-352 are vulnerable for a special denial of service attack.

7.5 (High)


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

CWE-400 - Uncontrolled Resource Consumption

Mitigation * Restrict network access to the device. * Do not directly connect the device to the internet * Disable unused TCP/UDP-ports

Vendor Fix Update the device to the latest FW version available here: https://www.wago.com/us/requestDownload?downloadFile=FWMedia_58_750-881

Affected products

Known affected 10 products

Product	Identifier	Version	Remediation
Unresolved product id: CSAFPID-31001		—
Unresolved product id: CSAFPID-31002		—
Unresolved product id: CSAFPID-31003		—
Unresolved product id: CSAFPID-31004		—
Unresolved product id: CSAFPID-31005		—
Unresolved product id: CSAFPID-31006		—
Unresolved product id: CSAFPID-31007		—
Unresolved product id: CSAFPID-31008		—
Unresolved product id: CSAFPID-31009		—
Unresolved product id: CSAFPID-31010		—

Fixed 10 products

Product	Identifier	Version	Remediation
Unresolved product id: CSAFPID-32001		—
Unresolved product id: CSAFPID-32002		—
Unresolved product id: CSAFPID-32003		—
Unresolved product id: CSAFPID-32004		—
Unresolved product id: CSAFPID-32005		—
Unresolved product id: CSAFPID-32006		—
Unresolved product id: CSAFPID-32007		—
Unresolved product id: CSAFPID-32008		—
Unresolved product id: CSAFPID-32009		—
Unresolved product id: CSAFPID-32010		—

References

3 references

URL	Category
https://certvde.com/en/advisories/vendor/wago/	external
https://certvde.com/en/advisories/VDE-2020-042/	self
https://wago.csaf-tp.certvde.com/.well-known/csaf…	self

Acknowledgments

CERTVDE certvde.com

WAGO GmbH & Co. KG William Knowles www.wago.com

JSON

To clipboard

{
  "document": {
    "acknowledgments": [
      {
        "organization": "CERTVDE",
        "summary": "coordination",
        "urls": [
          "https://certvde.com"
        ]
      },
      {
        "names": [
          "William Knowles"
        ],
        "organization": "WAGO GmbH \u0026 Co. KG",
        "summary": "reporting",
        "urls": [
          "https://www.wago.com"
        ]
      }
    ],
    "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": "The Web-Based Management (WBM) of WAGOs programmable logic controller (PLC) is typically used for administration, commissioning and updates.\nOlder firmware versions of the PLC family 750-88x and 750-352 are vulnerable for a special denial of service attack.\n\nAll newer Firmware releases since FW11, released in December 2017, are not affected.",
        "title": "Summary"
      },
      {
        "category": "description",
        "text": "An attacker which sends a series of maliciously constructed packets to HTTP(S) ports 80/443 could cause a crashed device, that needs a power on reset to go back to normal operation.",
        "title": "Impact"
      },
      {
        "category": "description",
        "text": "* Restrict network access to the device.\n* Do not directly connect the device to the internet\n* Disable unused TCP/UDP-ports",
        "title": "Mitigation"
      },
      {
        "category": "description",
        "text": "Update the device to the latest FW version available here:\n\nhttps://www.wago.com/us/requestDownload?downloadFile=FWMedia_58_750-881",
        "title": "Remediation"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "psirt@wago.com",
      "name": "WAGO GmbH \u0026 Co. KG",
      "namespace": "https://www.wago.com/psirt"
    },
    "references": [
      {
        "category": "external",
        "summary": "CERT@VDE Security Advisories for WAGO",
        "url": "https://certvde.com/en/advisories/vendor/wago/"
      },
      {
        "category": "self",
        "summary": "VDE-2020-042: WAGO: PLC families 750-88x and 750-352 prone to DoS attack, versions \u003c FW10 (Update A) - HTML",
        "url": "https://certvde.com/en/advisories/VDE-2020-042/"
      },
      {
        "category": "self",
        "summary": "VDE-2020-042: WAGO: PLC families 750-88x and 750-352 prone to DoS attack, versions \u003c FW10 (Update A) - CSAF",
        "url": "https://wago.csaf-tp.certvde.com/.well-known/csaf/white/2020/vde-2020-042.json"
      }
    ],
    "title": "WAGO: PLC families 750-88x and 750-352 prone to DoS attack, versions \u003c FW10 (Update A)",
    "tracking": {
      "aliases": [
        "VDE-2020-042"
      ],
      "current_release_date": "2025-05-14T13:00:14.000Z",
      "generator": {
        "date": "2025-04-02T08:44:40.804Z",
        "engine": {
          "name": "Secvisogram",
          "version": "2.5.18"
        }
      },
      "id": "VDE-2020-042",
      "initial_release_date": "2020-10-27T10:28:00.000Z",
      "revision_history": [
        {
          "date": "2020-10-27T10:28:00.000Z",
          "number": "1",
          "summary": "initial revision"
        },
        {
          "date": "2025-04-02T10:00:00.000Z",
          "number": "2",
          "summary": "Update: deleted Issuing authority"
        },
        {
          "date": "2025-05-14T13:00:14.000Z",
          "number": "3",
          "summary": "Fix: added distribution"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "750-331/xxx-xxx",
                "product": {
                  "name": "750-331/xxx-xxx",
                  "product_id": "CSAFPID-11001",
                  "product_identification_helper": {
                    "model_numbers": [
                      "750-331/xxx-xxx"
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              },
              {
                "category": "product_name",
                "name": "750-352",
                "product": {
                  "name": "750-352",
                  "product_id": "CSAFPID-11002",
                  "product_identification_helper": {
                    "model_numbers": [
                      "750-352"
                    ]
                  }
                }
              },
              {
                "category": "product_name",
                "name": "750-829",
                "product": {
                  "name": "750-829",
                  "product_id": "CSAFPID-11003",
                  "product_identification_helper": {
                    "model_numbers": [
                      "750-829"
                    ]
                  }
                }
              },
              {
                "category": "product_name",
                "name": "750-831/xxx-xxx",
                "product": {
                  "name": "750-831/xxx-xxx",
                  "product_id": "CSAFPID-11004",
                  "product_identification_helper": {
                    "model_numbers": [
                      "750-831/xxx-xxx"
                    ]
                  }
                }
              },
              {
                "category": "product_name",
                "name": "750-852",
                "product": {
                  "name": "750-852",
                  "product_id": "CSAFPID-11005",
                  "product_identification_helper": {
                    "model_numbers": [
                      "750-852"
                    ]
                  }
                }
              },
              {
                "category": "product_name",
                "name": "750-880/xxx-xxx",
                "product": {
                  "name": "750-880/xxx-xxx",
                  "product_id": "CSAFPID-11006",
                  "product_identification_helper": {
                    "model_numbers": [
                      "750-880/xxx-xxx"
                    ]
                  }
                }
              },
              {
                "category": "product_name",
                "name": "750-881",
                "product": {
                  "name": "750-881",
                  "product_id": "CSAFPID-11007",
                  "product_identification_helper": {
                    "model_numbers": [
                      "750-881"
                    ]
                  }
                }
              },
              {
                "category": "product_name",
                "name": "750-882",
                "product": {
                  "name": "750-882",
                  "product_id": "CSAFPID-11008",
                  "product_identification_helper": {
                    "model_numbers": [
                      "750-882"
                    ]
                  }
                }
              },
              {
                "category": "product_name",
                "name": "750-885",
                "product": {
                  "name": "750-885",
                  "product_id": "CSAFPID-11009",
                  "product_identification_helper": {
                    "model_numbers": [
                      "750-885"
                    ]
                  }
                }
              },
              {
                "category": "product_name",
                "name": "750-889",
                "product": {
                  "name": "750-889",
                  "product_id": "CSAFPID-11010",
                  "product_identification_helper": {
                    "model_numbers": [
                      "750-889"
                    ]
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Hardware"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c=FW10",
                "product": {
                  "name": "Firmware \u003c=FW10",
                  "product_id": "CSAFPID-21001"
                }
              },
              {
                "category": "product_version",
                "name": "FW11",
                "product": {
                  "name": "Firmware FW11",
                  "product_id": "CSAFPID-22001"
                }
              }
            ],
            "category": "product_family",
            "name": "Firmware"
          }
        ],
        "category": "vendor",
        "name": "WAGO GmbH \u0026 Co. KG"
      }
    ],
    "product_groups": [
      {
        "group_id": "CSAFGID-0001",
        "product_ids": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003",
          "CSAFPID-31004",
          "CSAFPID-31005",
          "CSAFPID-31006",
          "CSAFPID-31007",
          "CSAFPID-31008",
          "CSAFPID-31009",
          "CSAFPID-31010"
        ],
        "summary": "Affected Products"
      },
      {
        "group_id": "CSAFGID-0002",
        "product_ids": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32003",
          "CSAFPID-32004",
          "CSAFPID-32005",
          "CSAFPID-32006",
          "CSAFPID-32007",
          "CSAFPID-32008",
          "CSAFPID-32009",
          "CSAFPID-32010"
        ],
        "summary": "Fixed Products"
      }
    ],
    "relationships": [
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c=FW10 installed on 750-331/xxx-xxx",
          "product_id": "CSAFPID-31001"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11001"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware FW11 installed on 750-331/xxx-xxx",
          "product_id": "CSAFPID-32001"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11001"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c=FW10 installed on 750-352",
          "product_id": "CSAFPID-31002"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11002"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware FW11 installed on 750-352",
          "product_id": "CSAFPID-32002"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11002"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c=FW10 installed on 750-829",
          "product_id": "CSAFPID-31003"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11003"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware FW11 installed on 750-829",
          "product_id": "CSAFPID-32003"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11003"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c=FW10 installed on 750-831/xxx-xxx",
          "product_id": "CSAFPID-31004"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11004"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware FW11 installed on 750-831/xxx-xxx",
          "product_id": "CSAFPID-32004"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11004"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c=FW10 installed on 750-852",
          "product_id": "CSAFPID-31005"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11005"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware FW11 installed on 750-852",
          "product_id": "CSAFPID-32005"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11005"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c=FW10 installed on 750-880/xxx-xxx",
          "product_id": "CSAFPID-31006"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11006"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware FW11 installed on 750-880/xxx-xxx",
          "product_id": "CSAFPID-32006"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11006"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c=FW10 installed on 750-881",
          "product_id": "CSAFPID-31007"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11007"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware FW11 installed on 750-881",
          "product_id": "CSAFPID-32007"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11007"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c=FW10 installed on 750-882",
          "product_id": "CSAFPID-31008"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11008"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware FW11 installed on 750-882",
          "product_id": "CSAFPID-32008"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11008"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c=FW10 installed on 750-885",
          "product_id": "CSAFPID-31009"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11009"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware FW11 installed on 750-885",
          "product_id": "CSAFPID-32009"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11009"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware \u003c=FW10 installed on 750-889",
          "product_id": "CSAFPID-31010"
        },
        "product_reference": "CSAFPID-21001",
        "relates_to_product_reference": "CSAFPID-11010"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Firmware FW11 installed on 750-889",
          "product_id": "CSAFPID-32010"
        },
        "product_reference": "CSAFPID-22001",
        "relates_to_product_reference": "CSAFPID-11010"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2020-12516",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "notes": [
        {
          "audience": "all",
          "category": "description",
          "text": "Older firmware versions (FW1 up to FW10) of the WAGO PLC family 750-88x and 750-352 are vulnerable for a special denial of service attack.",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32003",
          "CSAFPID-32004",
          "CSAFPID-32005",
          "CSAFPID-32006",
          "CSAFPID-32007",
          "CSAFPID-32008",
          "CSAFPID-32009",
          "CSAFPID-32010"
        ],
        "known_affected": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31003",
          "CSAFPID-31004",
          "CSAFPID-31005",
          "CSAFPID-31006",
          "CSAFPID-31007",
          "CSAFPID-31008",
          "CSAFPID-31009",
          "CSAFPID-31010"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "* Restrict network access to the device.\n* Do not directly connect the device to the internet\n* Disable unused TCP/UDP-ports",
          "group_ids": [
            "CSAFGID-0001"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update the device to the latest FW version available here:\n\nhttps://www.wago.com/us/requestDownload?downloadFile=FWMedia_58_750-881",
          "group_ids": [
            "CSAFGID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "environmentalScore": 7.5,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 7.5,
            "temporalSeverity": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001",
            "CSAFPID-31002",
            "CSAFPID-31003",
            "CSAFPID-31004",
            "CSAFPID-31005",
            "CSAFPID-31006",
            "CSAFPID-31007",
            "CSAFPID-31008",
            "CSAFPID-31009",
            "CSAFPID-31010"
          ]
        }
      ],
      "title": "CVE-2020-12516"
    }
  ]
}

CVE-2020-12516 (GCVE-0-2020-12516)

Vulnerability from cvelistv5 – Published: 2020-12-10 03:04 – Updated: 2024-09-16 22:14

Title

WAGO: PLC families 750-88x and 750-352 prone to DoS attack

Summary

Older firmware versions (FW1 up to FW10) of the WAGO PLC family 750-88x and 750-352 are vulnerable for a special denial of service attack.

Severity

7.5 (High)


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

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

CERTVDE icscert root

References

2 references

URL	Tags
https://us-cert.cisa.gov/ics/advisories/icsa-20-308-01	x_refsource_MISC
https://cert.vde.com/en-us/advisories/vde-2020-042	x_refsource_CONFIRM

Impacted products

10 products

Vendor	Product	Version
WAGO	750-331/xxx-xxx	Affected: FW1<=FW10
WAGO	750-352	Affected: FW1<=FW10
WAGO	750-829	Affected: FW1<=FW10
WAGO	750-831/xxx-xxx	Affected: FW1<=FW10
WAGO	750-852	Affected: FW1<=FW10
WAGO	750-880/xxx-xxx	Affected: FW1<=FW10
WAGO	750-881	Affected: FW1<=FW10
WAGO	750-882	Affected: FW1<=FW10
WAGO	750-885	Affected: FW1<=FW10
WAGO	750-889	Affected: FW1<=FW10

Date Public

2020-12-09 00:00

Credits

These vulnerabilities were reported to WAGO by: William Knowles, Applied Risk. Coordination done by CERT@VDE.

Show details on NVD website

JSON

To clipboard

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        "providerMetadata": {
          "dateUpdated": "2024-08-04T11:56:52.085Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-308-01"
          },
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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.