NCSC-2026-0092

Vulnerability from csaf_ncscnl - Published: 2026-03-12 07:46 - Updated: 2026-03-12 07:46
Summary
Kwetsbaarheden verholpen in Fortinet FortiWeb

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 FortiWeb (Versies 7.0 tot 8.0.1).
Interpretaties
De kwetsbaarheden omvatten een mogelijkheid voor remote ongeauthenticeerde aanvallers om hostname-beperkingen te omzeilen, een OS command injection kwetsbaarheid binnen de FortiWeb API, en de mogelijkheid om authenticatie rate-limits te omzeilen. Daarnaast zijn er kwetsbaarheden gerapporteerd die leiden tot stack-based buffer overflows en een NULL Pointer Dereference, die kunnen worden misbruikt door geauthenticeerde aanvallers. Deze kwetsbaarheden kunnen resulteren in ongeautoriseerde toegang, uitvoering van willekeurige commando's, en verstoring van de beschikbaarheid van de FortiWeb service.
Oplossingen
Fortinet heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Kans
medium
Schade
high
CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-121
Stack-based Buffer Overflow
CWE-290
Authentication Bypass by Spoofing
CWE-476
NULL Pointer Dereference
CWE-799
Improper Control of Interaction Frequency
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{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "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 FortiWeb (Versies 7.0 tot 8.0.1).",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De kwetsbaarheden omvatten een mogelijkheid voor remote ongeauthenticeerde aanvallers om hostname-beperkingen te omzeilen, een OS command injection kwetsbaarheid binnen de FortiWeb API, en de mogelijkheid om authenticatie rate-limits te omzeilen. Daarnaast zijn er kwetsbaarheden gerapporteerd die leiden tot stack-based buffer overflows en een NULL Pointer Dereference, die kunnen worden misbruikt door geauthenticeerde aanvallers. Deze kwetsbaarheden kunnen resulteren in ongeautoriseerde toegang, uitvoering van willekeurige commando\u0027s, en verstoring van de beschikbaarheid van de FortiWeb service.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Fortinet heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.",
        "title": "Oplossingen"
      },
      {
        "category": "general",
        "text": "medium",
        "title": "Kans"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Schade"
      },
      {
        "category": "general",
        "text": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
        "title": "CWE-78"
      },
      {
        "category": "general",
        "text": "Stack-based Buffer Overflow",
        "title": "CWE-121"
      },
      {
        "category": "general",
        "text": "Authentication Bypass by Spoofing",
        "title": "CWE-290"
      },
      {
        "category": "general",
        "text": "NULL Pointer Dereference",
        "title": "CWE-476"
      },
      {
        "category": "general",
        "text": "Improper Control of Interaction Frequency",
        "title": "CWE-799"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "cert@ncsc.nl",
      "name": "Nationaal Cyber Security Centrum",
      "namespace": "https://www.ncsc.nl/"
    },
    "references": [
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-082"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-087"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-088"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-089"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-093"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-097"
      }
    ],
    "title": "Kwetsbaarheden verholpen in Fortinet FortiWeb",
    "tracking": {
      "current_release_date": "2026-03-12T07:46:15.529522Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
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          "version": "1.3"
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      },
      "id": "NCSC-2026-0092",
      "initial_release_date": "2026-03-12T07:46:15.529522Z",
      "revision_history": [
        {
          "date": "2026-03-12T07:46:15.529522Z",
          "number": "1.0.0",
          "summary": "Initiele versie"
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      ],
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  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-1"
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            ],
            "category": "product_name",
            "name": "FortiWeb"
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        ],
        "category": "vendor",
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  "vulnerabilities": [
    {
      "cve": "CVE-2025-48840",
      "cwe": {
        "id": "CWE-290",
        "name": "Authentication Bypass by Spoofing"
      },
      "notes": [
        {
          "category": "other",
          "text": "Authentication Bypass by Spoofing",
          "title": "CWE-290"
        },
        {
          "category": "description",
          "text": "A vulnerability in Fortinet FortiWeb versions 7.0 through 7.6.3 enables remote unauthenticated attackers to bypass hostname restrictions by spoofing authentication using specially crafted requests.",
          "title": "Summary"
        }
      ],
      "product_status": {
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        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-48840 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-48840.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:U/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2025-48840"
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    {
      "cve": "CVE-2025-66178",
      "cwe": {
        "id": "CWE-78",
        "name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
          "title": "CWE-78"
        },
        {
          "category": "description",
          "text": "Fortinet FortiWeb versions 7.0.0 to 8.0.1 contain an OS command injection vulnerability in the API that allows authenticated attackers to execute arbitrary commands via specially crafted HTTP requests.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-66178 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-66178.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C",
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          "products": [
            "CSAFPID-1"
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      ],
      "title": "CVE-2025-66178"
    },
    {
      "cve": "CVE-2026-24017",
      "cwe": {
        "id": "CWE-799",
        "name": "Improper Control of Interaction Frequency"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Control of Interaction Frequency",
          "title": "CWE-799"
        },
        {
          "category": "description",
          "text": "Multiple versions of Fortinet FortiWeb contain a vulnerability that allows remote unauthenticated attackers to bypass authentication rate-limits using crafted requests, with the success influenced by attacker resources and password complexity.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
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        ]
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      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-24017 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-24017.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:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2026-24017"
    },
    {
      "cve": "CVE-2026-24640",
      "cwe": {
        "id": "CWE-121",
        "name": "Stack-based Buffer Overflow"
      },
      "notes": [
        {
          "category": "other",
          "text": "Stack-based Buffer Overflow",
          "title": "CWE-121"
        },
        {
          "category": "description",
          "text": "A stack-based buffer overflow vulnerability in multiple versions of Fortinet FortiWeb allows remote authenticated attackers to execute arbitrary code by bypassing stack protection and ASLR via crafted HTTP requests.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
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          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-24640.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.6,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2026-24640"
    },
    {
      "cve": "CVE-2026-24641",
      "cwe": {
        "id": "CWE-476",
        "name": "NULL Pointer Dereference"
      },
      "notes": [
        {
          "category": "other",
          "text": "NULL Pointer Dereference",
          "title": "CWE-476"
        },
        {
          "category": "description",
          "text": "A NULL Pointer Dereference vulnerability in multiple versions of Fortinet FortiWeb allows an authenticated attacker to crash the HTTP daemon via specially crafted HTTP requests.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
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        {
          "category": "self",
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          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-24641.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 2.7,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2026-24641"
    },
    {
      "cve": "CVE-2026-30897",
      "cwe": {
        "id": "CWE-121",
        "name": "Stack-based Buffer Overflow"
      },
      "notes": [
        {
          "category": "other",
          "text": "Stack-based Buffer Overflow",
          "title": "CWE-121"
        },
        {
          "category": "description",
          "text": "A stack-based buffer overflow vulnerability in multiple versions of Fortinet FortiWeb allows remote authenticated attackers to bypass stack protection and ASLR, enabling arbitrary code or command execution via crafted HTTP requests.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-30897 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-30897.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.6,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2026-30897"
    }
  ]
}


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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.