FKIE_CVE-2021-21865

Vulnerability from fkie_nvd - Published: 2021-08-02 21:15 - Updated: 2026-06-17 03:36
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
A unsafe deserialization vulnerability exists in the PackageManagement.plugin ExtensionMethods.Clone() functionality of CODESYS GmbH CODESYS Development System 3.5.16. A specially crafted file can lead to arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability.
References
talos-cna@cisco.comhttps://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16805&token=ee583c498941d9fda86490bca98ff21928eec08a&download=Mitigation, Patch, Vendor Advisory
talos-cna@cisco.comhttps://talosintelligence.com/vulnerability_reports/TALOS-2021-1301Not Applicable, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16805&token=ee583c498941d9fda86490bca98ff21928eec08a&download=Mitigation, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://talosintelligence.com/vulnerability_reports/TALOS-2021-1301Not Applicable, Third Party Advisory
Impacted products
Vendor Product Version
codesys development_system 3.5.16.0
codesys development_system 3.5.17.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "CODESYS",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "CODESYS GmbH CODESYS Development System 3.5.16"
            }
          ]
        }
      ],
      "source": "talos-cna@cisco.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:codesys:development_system:3.5.16.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "CB4BD16F-2198-401B-BAE9-66977F82DA83",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:codesys:development_system:3.5.17.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "ED828A04-2821-4616-847F-1435B50778CA",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A unsafe deserialization vulnerability exists in the PackageManagement.plugin ExtensionMethods.Clone() functionality of CODESYS GmbH CODESYS Development System 3.5.16. A specially crafted file can lead to arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de deserializaci\u00f3n no segura en la funcionalidad PackageManagement.plugin ExtensionMethods.Clone() de CODESYS GmbH CODESYS Development System versi\u00f3n 3.5.16. Un archivo especialmente dise\u00f1ado puede conllevar a una ejecuci\u00f3n arbitraria de comandos. Un atacante puede proporcionar un archivo malicioso para desencadenar esta vulnerabilidad"
    }
  ],
  "id": "CVE-2021-21865",
  "lastModified": "2026-06-17T03:36:15.620",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "talos-cna@cisco.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-08-02T21:15:07.973",
  "references": [
    {
      "source": "talos-cna@cisco.com",
      "tags": [
        "Mitigation",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=16805\u0026token=ee583c498941d9fda86490bca98ff21928eec08a\u0026download="
    },
    {
      "source": "talos-cna@cisco.com",
      "tags": [
        "Not Applicable",
        "Third Party Advisory"
      ],
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1301"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mitigation",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=16805\u0026token=ee583c498941d9fda86490bca98ff21928eec08a\u0026download="
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Not Applicable",
        "Third Party Advisory"
      ],
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1301"
    }
  ],
  "sourceIdentifier": "talos-cna@cisco.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "talos-cna@cisco.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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