CVE-2026-21743 (GCVE-0-2026-21743)
Vulnerability from cvelistv5
Published
2026-02-10 15:39
Modified
2026-02-12 00:27
Severity ?
7.2 (High) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C
CWE
  • CWE-862 - Improper access control
Summary
A missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all versions, FortiAuthenticator 6.4 all versions, FortiAuthenticator 6.3 all versions may allow a read-only user to make modification to local users via a file upload to an unprotected endpoint.
References
Impacted products
Vendor Product Version
Fortinet FortiAuthenticator Version: 6.6.0   ≤ 6.6.6
Version: 6.5.0   ≤ 6.5.7
Version: 6.4.0   ≤ 6.4.11
Version: 6.3.0   ≤ 6.3.5
    cpe:2.3:a:fortinet:fortiauthenticator:6.6.6:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.6.5:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.6.4:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.6.2:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.5.7:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.5.6:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.5.5:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.5.4:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.5.3:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.5.2:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.5.1:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.4.11:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.4.10:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.4.9:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.4.8:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.4.7:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.4.6:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.4.5:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.4.4:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.4.3:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.4.2:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.3.5:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.3.4:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.3.3:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.3.2:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.3.1:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortiauthenticator:6.3.0:*:*:*:*:*:*:*
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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-21743",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-10T16:26:05.549911Z",
                "version": "2.0.3"
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:fortinet:fortiauthenticator:6.6.6:*:*:*:*:*:*:*",
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            "cpe:2.3:a:fortinet:fortiauthenticator:6.6.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.5.7:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.5.6:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.5.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.5.4:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.5.3:*:*:*:*:*:*:*",
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            "cpe:2.3:a:fortinet:fortiauthenticator:6.4.9:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.4.8:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.4.7:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.4.6:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.4.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.4.4:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.4.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.4.2:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.4.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.4.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.3.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.3.4:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.3.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.3.2:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.3.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiauthenticator:6.3.0:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "product": "FortiAuthenticator",
          "vendor": "Fortinet",
          "versions": [
            {
              "lessThanOrEqual": "6.6.6",
              "status": "affected",
              "version": "6.6.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.7",
              "status": "affected",
              "version": "6.5.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.11",
              "status": "affected",
              "version": "6.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.3.5",
              "status": "affected",
              "version": "6.3.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all versions, FortiAuthenticator 6.4 all versions, FortiAuthenticator 6.3 all versions may allow a read-only user to make modification to local users via a file upload to an unprotected endpoint."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C",
            "version": "3.1"
          },
          "format": "CVSS"
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "Improper access control",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2026-02-12T00:27:03.410Z",
        "orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
        "shortName": "fortinet"
      },
      "references": [
        {
          "name": "https://fortiguard.fortinet.com/psirt/FG-IR-25-528",
          "url": "https://fortiguard.fortinet.com/psirt/FG-IR-25-528"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to FortiAuthenticator version 8.0.0 or above\nUpgrade to FortiAuthenticator version 6.6.7 or above"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
    "assignerShortName": "fortinet",
    "cveId": "CVE-2026-21743",
    "datePublished": "2026-02-10T15:39:11.799Z",
    "dateReserved": "2026-01-05T14:17:53.224Z",
    "dateUpdated": "2026-02-12T00:27:03.410Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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