FKIE_CVE-2020-9291

Vulnerability from fkie_nvd - Published: 2020-06-01 19:15 - Updated: 2026-06-17 03:27
Severity
6.3 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
An Insecure Temporary File vulnerability in FortiClient for Windows 6.2.1 and below may allow a local user to gain elevated privileges via exhausting the pool of temporary file names combined with a symbolic link attack.
References
psirt@fortinet.comhttps://fortiguard.com/psirt/FG-IR-20-040Broken Link
nvd@nist.govhttps://www.fortiguard.com/psirt/FG-IR-20-040Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://fortiguard.com/psirt/FG-IR-20-040Broken Link
Impacted products
Vendor Product Version
fortinet forticlient *
fortinet forticlient *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Fortinet FortiClient for Windows",
          "vendor": "Fortinet",
          "versions": [
            {
              "status": "affected",
              "version": "FortiClient for Windows 6.2.1 and earlier and FortiClient for Windows 6.0.9 and earlier"
            }
          ]
        }
      ],
      "source": "psirt@fortinet.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:windows:*:*",
              "matchCriteriaId": "C3D3CD6A-530D-49F7-85B1-010D01AF8055",
              "versionEndIncluding": "6.0.9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:windows:*:*",
              "matchCriteriaId": "FDD1980D-3795-46FF-82E7-4D225A245779",
              "versionEndIncluding": "6.2.1",
              "versionStartIncluding": "6.2.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An Insecure Temporary File vulnerability in FortiClient for Windows 6.2.1 and below may allow a local user to gain elevated privileges via exhausting the pool of temporary file names combined with a symbolic link attack."
    },
    {
      "lang": "es",
      "value": "Una Vulnerabilidad de Archivos Temporales No Seguros en FortiClient para Windows versiones 6.2.1 y posteriores, puede permitir a un usuario local alcanzar privilegios elevados por medio del agotamiento del conjunto de nombres de archivos temporales combinado con un ataque de enlace simb\u00f3lico."
    }
  ],
  "id": "CVE-2020-9291",
  "lastModified": "2026-06-17T03:27:42.853",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.6,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.4,
        "source": "psirt@fortinet.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2020-9291",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-10-23T13:59:15.726193Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2020-06-01T19:15:10.190",
  "references": [
    {
      "source": "psirt@fortinet.com",
      "tags": [
        "Broken Link"
      ],
      "url": "https://fortiguard.com/psirt/FG-IR-20-040"
    },
    {
      "source": "nvd@nist.gov",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.fortiguard.com/psirt/FG-IR-20-040"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link"
      ],
      "url": "https://fortiguard.com/psirt/FG-IR-20-040"
    }
  ],
  "sourceIdentifier": "psirt@fortinet.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-668"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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