FKIE_CVE-2021-34570

Vulnerability from fkie_nvd - Published: 2021-09-27 09:15 - Updated: 2026-06-17 03:56
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests.
References
info@cert.vde.comhttps://cert.vde.com/en/advisories/VDE-2021-029/Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cert.vde.com/en/advisories/VDE-2021-029/Patch, Third Party Advisory
Impacted products
Vendor Product Version
phoenixcontact plcnext_technology_starterkit_firmware *
phoenixcontact plcnext_technology_starterkit -
phoenixcontact axc_f_2152_starterkit_firmware *
phoenixcontact axc_f_2152_starterkit -
phoenixcontact rfc_4072s_firmware *
phoenixcontact rfc_4072s -
phoenixcontact axc_f_3152_firmware *
phoenixcontact axc_f_3152 -
phoenixcontact axc_f_1152_firmware *
phoenixcontact axc_f_1152 -
phoenixcontact axc_f_2152_firmware *
phoenixcontact axc_f_2152 -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "AXC F",
          "vendor": "Phoenix Contact",
          "versions": [
            {
              "lessThan": "2021.0.5 LTS",
              "status": "affected",
              "version": "AXC F 1152 (1151412)",
              "versionType": "custom"
            },
            {
              "lessThan": "2021.0.5 LTS",
              "status": "affected",
              "version": "AXC F 2152 (2404267)",
              "versionType": "custom"
            },
            {
              "lessThan": "2021.0.5 LTS",
              "status": "affected",
              "version": "AXC F 3152 (1069208)",
              "versionType": "custom"
            },
            {
              "lessThan": "2021.0.5 LTS",
              "status": "affected",
              "version": "AXC F 2152 Starterkit (1046568)",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "RFC",
          "vendor": "Phoenix Contact",
          "versions": [
            {
              "lessThan": "2021.0.5 LTS",
              "status": "affected",
              "version": "RFC 4072S (1051328)",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "PLCnext",
          "vendor": "Phoenix Contact",
          "versions": [
            {
              "lessThan": "2021.0.5 LTS",
              "status": "affected",
              "version": "PLCnext Technology Starterkit (1188165)",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "info@cert.vde.com"
    }
  ],
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple Phoenix Contact PLCnext control devices in versions prior to 2021.0.5 LTS are prone to a DoS attack through special crafted JSON requests."
    },
    {
      "lang": "es",
      "value": "M\u00faltiples dispositivos de control Phoenix Contact PLCnext en versiones anteriores a 2021.0.5 LTS, son propensos a un ataque DoS mediante peticiones JSON especialmente dise\u00f1adas"
    }
  ],
  "id": "CVE-2021-34570",
  "lastModified": "2026-06-17T03:56:08.930",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.8,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "info@cert.vde.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "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"
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        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  },
  "published": "2021-09-27T09:15:07.750",
  "references": [
    {
      "source": "info@cert.vde.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://cert.vde.com/en/advisories/VDE-2021-029/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://cert.vde.com/en/advisories/VDE-2021-029/"
    }
  ],
  "sourceIdentifier": "info@cert.vde.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "info@cert.vde.com",
      "type": "Secondary"
    }
  ]
}



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