NCSC-2025-0386

Vulnerability from csaf_ncscnl - Published: 2025-12-10 09:51 - Updated: 2025-12-16 10:33
Summary
Kwetsbaarheden verholpen in Fortinet producten

Notes

The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions: NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein. NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory. This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.
Feiten
Fortinet heeft kwetsbaarheden verholpen in FortiOS, FortiProxy, FortiWeb en FortiSwitchManager.
Interpretaties
De kwetsbaarheden stellen ongeauthenticeerde aanvallers in staat om toegang te krijgen tot de systemen door gebruik te maken van verschillende technieken, waaronder het omzeilen van FortiCloud SSO-login authenticatie via speciaal vervaardigde SAML-berichten, het behouden van actieve SSLVPN-sessies ondanks een wachtwoordwijziging, en het uitvoeren van ongeautoriseerde operaties via vervalste HTTP- of HTTPS-verzoeken. Dit kan leiden tot ongeautoriseerde toegang tot gevoelige API-gegevens en andere netwerkbronnen. **update**: Onderzoekers melden actief misbruik waar te nemen van de kwetsbaarheden met kenmerk CVE-2025-59718 en CVE-59719. Deze kwetsbaarheden stellen kwaadwillenden in staat om de Single Sign On te omzeilen en zo toegang te krijgen tot de kwetsbare systemen. De onderzoekers hebben Indicators of Compromise (IoC's) gepubliceerd om misbruik te kunnen onderzoeken. Het NCSC adviseert zo spoedig mogelijk de updates van Fortinet in te zetten, indien dit nog niet is gedaan, eventueel de mitigerende maatregelen in te zetten en middels de gepubliceerde IoC's te onderzoeken of misbruik heeft plaatsgevonden en op basis daarvan de administrator accounts het password van te roteren. Het NCSC adviseert aanvullend om te overwegen de open sessies van administrators te sluiten na inzet van de updates. Zie voor detailinformatie van de IoC's: https://arcticwolf.com/resources/blog/arctic-wolf-observes-malicious-sso-logins-following-disclosure-cve-2025-59718-cve-2025-59719/
Oplossingen
Als mitigerende maatregel tegen de authenticatie-bypass kan FortiCloud SSO login worden uitgeschakeld. Fortinet heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Kans
high
Schade
high
CWE-347
Improper Verification of Cryptographic Signature
CWE-532
Insertion of Sensitive Information into Log File
CWE-613
Insufficient Session Expiration
To clipboard 

{
  "document": {
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    "lang": "nl",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
      },
      {
        "category": "description",
        "text": "Fortinet heeft kwetsbaarheden verholpen in FortiOS, FortiProxy, FortiWeb en FortiSwitchManager.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De kwetsbaarheden stellen ongeauthenticeerde aanvallers in staat om toegang te krijgen tot de systemen door gebruik te maken van verschillende technieken, waaronder het omzeilen van FortiCloud SSO-login authenticatie via speciaal vervaardigde SAML-berichten, het behouden van actieve SSLVPN-sessies ondanks een wachtwoordwijziging, en het uitvoeren van ongeautoriseerde operaties via vervalste HTTP- of HTTPS-verzoeken. Dit kan leiden tot ongeautoriseerde toegang tot gevoelige API-gegevens en andere netwerkbronnen.\n\n**update**: Onderzoekers melden actief misbruik waar te nemen van de kwetsbaarheden met kenmerk CVE-2025-59718 en CVE-59719. Deze kwetsbaarheden stellen kwaadwillenden in staat om de Single Sign On te omzeilen en zo toegang te krijgen tot de kwetsbare systemen. De onderzoekers hebben Indicators of Compromise (IoC\u0027s) gepubliceerd om misbruik te kunnen onderzoeken. Het NCSC adviseert zo spoedig mogelijk de updates van Fortinet in te zetten, indien dit nog niet is gedaan, eventueel de mitigerende maatregelen in te zetten en middels de gepubliceerde IoC\u0027s te onderzoeken of misbruik heeft plaatsgevonden en op basis daarvan de administrator accounts het password van te roteren.\nHet NCSC adviseert aanvullend om te overwegen de open sessies van administrators te sluiten na inzet van de updates.\n\nZie voor detailinformatie van de IoC\u0027s: https://arcticwolf.com/resources/blog/arctic-wolf-observes-malicious-sso-logins-following-disclosure-cve-2025-59718-cve-2025-59719/\n\n",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Als mitigerende maatregel tegen de authenticatie-bypass kan FortiCloud SSO login worden uitgeschakeld. Fortinet heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.",
        "title": "Oplossingen"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Kans"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Schade"
      },
      {
        "category": "general",
        "text": "Improper Verification of Cryptographic Signature",
        "title": "CWE-347"
      },
      {
        "category": "general",
        "text": "Insertion of Sensitive Information into Log File",
        "title": "CWE-532"
      },
      {
        "category": "general",
        "text": "Insufficient Session Expiration",
        "title": "CWE-613"
      }
    ],
    "publisher": {
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      "contact_details": "cert@ncsc.nl",
      "name": "Nationaal Cyber Security Centrum",
      "namespace": "https://www.ncsc.nl/"
    },
    "references": [
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://arcticwolf.com/resources/blog/arctic-wolf-observes-malicious-sso-logins-following-disclosure-cve-2025-59718-cve-2025-59719/"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://fortiguard.fortinet.com/psirt/FG-IR-24-268"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://fortiguard.fortinet.com/psirt/FG-IR-25-411"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://fortiguard.fortinet.com/psirt/FG-IR-25-647"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://fortiguard.fortinet.com/psirt/FG-IR-25-945"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://fortiguard.fortinet.com/psirt/FG-IR-25-984"
      }
    ],
    "title": "Kwetsbaarheden verholpen in Fortinet producten",
    "tracking": {
      "current_release_date": "2025-12-16T10:33:05.061241Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
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          "summary": "Initiele versie"
        },
        {
          "date": "2025-12-16T10:33:05.061241Z",
          "number": "1.0.1",
          "summary": "Onderzoekers melden actief misbruik waar te nemen van de kwetsbaarheden met kenmerk CVE-2025-59718 en CVE-2025-59719 en hebben IoC\u0027s gedeeld."
        }
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        "name": "Improper Verification of Cryptographic Signature"
      },
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          "title": "CWE-347"
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          "title": "Summary"
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    {
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          "text": "Insufficient Session Expiration",
          "title": "CWE-613"
        },
        {
          "category": "description",
          "text": "Fortinet FortiOS has an insufficient session expiration vulnerability that allows attackers to maintain access to SSLVPN sessions even after a user changes their password under certain conditions.",
          "title": "Summary"
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        {
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          "summary": "CVE-2025-62631 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-62631.json"
        }
      ],
      "scores": [
        {
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        "name": "Insertion of Sensitive Information into Log File"
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          "title": "CWE-532"
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          "text": "A vulnerability in FortiOS, FortiProxy, FortiPAM, and FortiSRA allows read-only administrators to access other administrators\u0027 API tokens through REST API logs when logging is enabled, impacting multiple versions of these products.",
          "title": "Summary"
        }
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          "CSAFPID-3",
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        }
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            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:C",
            "version": "3.1"
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            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4"
          ]
        }
      ],
      "title": "CVE-2024-47570"
    },
    {
      "cve": "CVE-2025-64471",
      "cwe": {
        "id": "CWE-836",
        "name": "Use of Password Hash Instead of Password for Authentication"
      },
      "notes": [
        {
          "category": "other",
          "text": "Use of Password Hash Instead of Password for Authentication",
          "title": "CWE-836"
        },
        {
          "category": "description",
          "text": "A vulnerability in Fortinet FortiWeb versions 8.0.0 to 8.0.1, 7.6.0 to 7.6.5, 7.4.0 to 7.4.10, 7.2.0 to 7.2.11, and 7.0.0 to 7.0.11 allows unauthenticated attackers to authenticate using a password hash via crafted HTTP/HTTPS requests.",
          "title": "Summary"
        }
      ],
      "product_status": {
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          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4"
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      },
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        {
          "category": "self",
          "summary": "CVE-2025-64471 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-64471.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 4.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1",
            "CSAFPID-2",
            "CSAFPID-3",
            "CSAFPID-4"
          ]
        }
      ],
      "title": "CVE-2025-64471"
    },
    {
      "cve": "CVE-2025-64447",
      "cwe": {
        "id": "CWE-565",
        "name": "Reliance on Cookies without Validation and Integrity Checking"
      },
      "notes": [
        {
          "category": "other",
          "text": "Reliance on Cookies without Validation and Integrity Checking",
          "title": "CWE-565"
        },
        {
          "category": "description",
          "text": "A vulnerability in multiple Fortinet FortiWeb versions allows unauthenticated attackers to execute arbitrary operations via crafted HTTP/HTTPS requests using forged cookies, requiring knowledge of the FortiWeb serial number.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1",
          "CSAFPID-2",
          "CSAFPID-3",
          "CSAFPID-4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-64447 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-64447.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
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            "CSAFPID-4"
          ]
        }
      ],
      "title": "CVE-2025-64447"
    }
  ]
}


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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.