FKIE_CVE-2026-24858

Vulnerability from fkie_nvd - Published: 2026-01-27 20:16 - Updated: 2026-06-17 10:23
Summary
An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.5, FortiAnalyzer 7.4.0 through 7.4.9, FortiAnalyzer 7.2.0 through 7.2.11, FortiAnalyzer 7.0.0 through 7.0.15, FortiManager 7.6.0 through 7.6.5, FortiManager 7.4.0 through 7.4.9, FortiManager 7.2.0 through 7.2.11, FortiManager 7.0.0 through 7.0.15, FortiNAC-F 7.6.3 through 7.6.5, FortiOS 7.6.0 through 7.6.5, FortiOS 7.4.0 through 7.4.10, FortiOS 7.2.0 through 7.2.12, FortiOS 7.0.0 through 7.0.18, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4.0 through 7.4.12, FortiProxy 7.2.0 through 7.2.15, FortiProxy 7.0.0 through 7.0.22, FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11 may allow an attacker with a FortiCloud account and a registered device to log into other devices registered to other accounts, if FortiCloud SSO authentication is enabled on those devices.

{
  "affected": [
    {
      "affectedData": [
        {
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            "cpe:2.3:a:fortinet:fortiweb:7.6.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.6.2:*:*:*:*:*:*:*",
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            "cpe:2.3:a:fortinet:fortiweb:7.4.8:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.7:*:*:*:*:*:*:*",
            "cpe:2.3:a:fortinet:fortiweb:7.4.6:*:*:*:*:*:*:*",
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            "cpe:2.3:a:fortinet:fortiweb:7.4.3:*:*:*:*:*:*:*",
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          "product": "FortiNAC-F",
          "vendor": "Fortinet",
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          "cpes": [
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            }
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        {
          "cpes": [
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  "cisaActionDue": "2026-01-30",
  "cisaExploitAdd": "2026-01-27",
  "cisaRequiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
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      "value": "An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.5, FortiAnalyzer 7.4.0 through 7.4.9, FortiAnalyzer 7.2.0 through 7.2.11, FortiAnalyzer 7.0.0 through 7.0.15, FortiManager 7.6.0 through 7.6.5, FortiManager 7.4.0 through 7.4.9, FortiManager 7.2.0 through 7.2.11, FortiManager 7.0.0 through 7.0.15, FortiNAC-F 7.6.3 through 7.6.5, FortiOS 7.6.0 through 7.6.5, FortiOS 7.4.0 through 7.4.10, FortiOS 7.2.0 through 7.2.12, FortiOS 7.0.0 through 7.0.18, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4.0 through 7.4.12, FortiProxy 7.2.0 through 7.2.15, FortiProxy 7.0.0 through 7.0.22, FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11 may allow an attacker with a FortiCloud account and a registered device to log into other devices registered to other accounts, if FortiCloud SSO authentication is enabled on those devices."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de omisi\u00f3n de autenticaci\u00f3n usando una ruta o canal alternativo [CWE-288] en Fortinet FortiAnalyzer 7.6.0 hasta 7.6.5, FortiAnalyzer 7.4.0 hasta 7.4.9, FortiAnalyzer 7.2.0 hasta 7.2.11, FortiAnalyzer 7.0.0 hasta 7.0.15, FortiManager 7.6.0 hasta 7.6.5, FortiManager 7.4.0 hasta 7.4.9, FortiManager 7.2.0 hasta 7.2.11, FortiManager 7.0.0 hasta 7.0.15, FortiOS 7.6.0 hasta 7.6.5, FortiOS 7.4.0 hasta 7.4.10, FortiOS 7.2.0 hasta 7.2.12, FortiOS 7.0.0 hasta 7.0.18, FortiProxy 7.6.0 hasta 7.6.4, FortiProxy 7.4.0 hasta 7.4.12, FortiProxy 7.2.0 hasta 7.2.15, FortiProxy 7.0.0 hasta 7.0.22, FortiWeb 8.0.0 hasta 8.0.3, FortiWeb 7.6.0 hasta 7.6.6, FortiWeb 7.4.0 hasta 7.4.11 puede permitir a un atacante con una cuenta de FortiCloud y un dispositivo registrado iniciar sesi\u00f3n en otros dispositivos registrados en otras cuentas, si la autenticaci\u00f3n SSO de FortiCloud est\u00e1 habilitada en esos dispositivos."
    }
  ],
  "id": "CVE-2026-24858",
  "lastModified": "2026-06-17T10:23:43.040",
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "impactScore": 5.9,
        "source": "psirt@fortinet.com",
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            {
              "technicalImpact": "total"
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          "role": "CISA Coordinator",
          "timestamp": "2026-01-28T04:55:41.959755Z",
          "version": "2.0.3"
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  "published": "2026-01-27T20:16:24.477",
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      "source": "psirt@fortinet.com",
      "tags": [
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      "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-060"
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  "vulnStatus": "Analyzed",
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      "description": [
        {
          "lang": "en",
          "value": "CWE-288"
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      ],
      "source": "psirt@fortinet.com",
      "type": "Secondary"
    }
  ]
}


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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.

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.

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Detection rules are retrieved from Rulezet.

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