Vulnerability-Lookup

CVE-2026-24858 (GCVE-0-2026-24858)

Vulnerability from cvelistv5 – Published: 2026-01-27 19:18 – Updated: 2026-01-27 22:00

CISA

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, 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 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.

Severity ?

9.4 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE

CWE-288 - Improper access control

Assigner

fortinet

References

URL

CISA Known Exploited Vulnerability

Data from the CISA Known Exploited Vulnerabilities Catalog

Date added: 2026-01-27

Due date: 2026-01-30

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Used in ransomware: Unknown

Notes: Please adhere to Fortinet's guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible Fortinet products affected by this vulnerability. Apply any final mitigations provided by the vendor as soon as they become available. For more information please see: https://fortiguard.fortinet.com/psirt/FG-IR-26-060 ; https://www.fortinet.com/blog/psirt-blogs/analysis-of-sso-abuse-on-fortios ; https://nvd.nist.gov/vuln/detail/CVE-2026-24858

Show details on NVD website

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                "role": "CISA Coordinator",
                "timestamp": "2026-01-27T21:06:14.189541Z",
                "version": "2.0.3"
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.4,
            "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/E:H/RL:O/RC:C",
            "version": "3.1"
          },
          "format": "CVSS"
        }
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          "descriptions": [
            {
              "cweId": "CWE-288",
              "description": "Improper access control",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-27T19:33:10.911Z",
        "orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
        "shortName": "fortinet"
      },
      "references": [
        {
          "name": "https://fortiguard.fortinet.com/psirt/FG-IR-26-060",
          "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-060"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to upcoming  FortiProxy version 7.6.6 or above\nUpgrade to upcoming  FortiProxy version 7.4.13 or above\nUpgrade to upcoming  FortiAnalyzer version 7.6.6 or above\nUpgrade to upcoming  FortiAnalyzer version 7.4.10 or above\nUpgrade to upcoming  FortiAnalyzer version 7.2.12 or above\nUpgrade to upcoming  FortiAnalyzer version 7.0.16 or above\nUpgrade to upcoming  FortiOS version 8.0.0 or above\nUpgrade to upcoming  FortiOS version 7.6.6 or above\nUpgrade to upcoming  FortiOS version 7.4.11 or above\nUpgrade to upcoming  FortiOS version 7.2.13 or above\nUpgrade to upcoming  FortiOS version 7.0.19 or above\nUpgrade to upcoming  FortiManager version 8.0.0 or above\nUpgrade to upcoming  FortiManager version 7.6.6 or above\nUpgrade to upcoming  FortiManager version 7.4.10 or above\nUpgrade to upcoming  FortiManager version 7.2.13 or above\nUpgrade to upcoming  FortiManager version 7.0.16 or above"
        }
      ]
    }
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    "assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
    "assignerShortName": "fortinet",
    "cveId": "CVE-2026-24858",
    "datePublished": "2026-01-27T19:18:23.591Z",
    "dateReserved": "2026-01-27T15:11:02.057Z",
    "dateUpdated": "2026-01-27T22:00:45.567Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "cisa_known_exploited": {
      "cveID": "CVE-2026-24858",
      "cwes": "[\"CWE-288\"]",
      "dateAdded": "2026-01-27",
      "dueDate": "2026-01-30",
      "knownRansomwareCampaignUse": "Unknown",
      "notes": "Please adhere to Fortinet\u0027s guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible Fortinet products affected by this vulnerability. Apply any final mitigations provided by the vendor as soon as they become available. For more information please see: https://fortiguard.fortinet.com/psirt/FG-IR-26-060 ; https://www.fortinet.com/blog/psirt-blogs/analysis-of-sso-abuse-on-fortios ; https://nvd.nist.gov/vuln/detail/CVE-2026-24858",
      "product": "Multiple Products",
      "requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
      "shortDescription": "Fortinet FortiAnalyzer, FortiManager, FortiOS, and FortiProxy contain an authentication bypass using an alternate path or channel that could 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.",
      "vendorProject": "Fortinet",
      "vulnerabilityName": "Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel Vulnerability"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-24858\",\"sourceIdentifier\":\"psirt@fortinet.com\",\"published\":\"2026-01-27T20:16:24.477\",\"lastModified\":\"2026-01-27T21:16:04.027\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"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, 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 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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@fortinet.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"psirt@fortinet.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-288\"}]}],\"references\":[{\"url\":\"https://fortiguard.fortinet.com/psirt/FG-IR-26-060\",\"source\":\"psirt@fortinet.com\"},{\"url\":\"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24858\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\"}]}}",
    "vulnrichment": {
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7.4.13 or above\\nUpgrade to upcoming  FortiAnalyzer version 7.6.6 or above\\nUpgrade to upcoming  FortiAnalyzer version 7.4.10 or above\\nUpgrade to upcoming  FortiAnalyzer version 7.2.12 or above\\nUpgrade to upcoming  FortiAnalyzer version 7.0.16 or above\\nUpgrade to upcoming  FortiOS version 8.0.0 or above\\nUpgrade to upcoming  FortiOS version 7.6.6 or above\\nUpgrade to upcoming  FortiOS version 7.4.11 or above\\nUpgrade to upcoming  FortiOS version 7.2.13 or above\\nUpgrade to upcoming  FortiOS version 7.0.19 or above\\nUpgrade to upcoming  FortiManager version 8.0.0 or above\\nUpgrade to upcoming  FortiManager version 7.6.6 or above\\nUpgrade to upcoming  FortiManager version 7.4.10 or above\\nUpgrade to upcoming  FortiManager version 7.2.13 or above\\nUpgrade to upcoming  FortiManager version 7.0.16 or above\"}], \"references\": [{\"url\": \"https://fortiguard.fortinet.com/psirt/FG-IR-26-060\", \"name\": \"https://fortiguard.fortinet.com/psirt/FG-IR-26-060\"}], \"descriptions\": [{\"lang\": \"en\", \"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, 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 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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-288\", \"description\": \"Improper access control\"}]}], \"providerMetadata\": {\"orgId\": \"6abe59d8-c742-4dff-8ce8-9b0ca1073da8\", \"shortName\": \"fortinet\", \"dateUpdated\": \"2026-01-27T19:33:10.911Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-24858\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-27T22:00:45.567Z\", \"dateReserved\": \"2026-01-27T15:11:02.057Z\", \"assignerOrgId\": \"6abe59d8-c742-4dff-8ce8-9b0ca1073da8\", \"datePublished\": \"2026-01-27T19:18:23.591Z\", \"assignerShortName\": \"fortinet\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

GHSA-2X38-48VP-W23X

Vulnerability from github – Published: 2026-01-27 21:31 – Updated: 2026-01-27 21:31

Details

Severity ?

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-24858"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-288"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-27T20:16:24Z",
    "severity": "CRITICAL"
  },
  "details": "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, 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 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.",
  "id": "GHSA-2x38-48vp-w23x",
  "modified": "2026-01-27T21:31:49Z",
  "published": "2026-01-27T21:31:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24858"
    },
    {
      "type": "WEB",
      "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-060"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24858"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

FKIE_CVE-2026-24858

Vulnerability from fkie_nvd - Published: 2026-01-27 20:16 - Updated: 2026-01-27 20:16

Severity ?

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	psirt@fortinet.com	https://fortiguard.fortinet.com/psirt/FG-IR-26-060

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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, 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 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."
    }
  ],
  "id": "CVE-2026-24858",
  "lastModified": "2026-01-27T20:16:24.477",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "psirt@fortinet.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-01-27T20:16:24.477",
  "references": [
    {
      "source": "psirt@fortinet.com",
      "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-060"
    }
  ],
  "sourceIdentifier": "psirt@fortinet.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-288"
        }
      ],
      "source": "psirt@fortinet.com",
      "type": "Primary"
    }
  ]
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-24858 (GCVE-0-2026-24858)

CISA Known Exploited Vulnerability

Data from the CISA Known Exploited Vulnerabilities Catalog

GHSA-2X38-48VP-W23X

FKIE_CVE-2026-24858

Tags

Sightings

Nomenclature