ncsc-2025-0373
Vulnerability from csaf_ncscnl
Published
2025-11-19 08:35
Modified
2025-11-19 08:35
Summary
Kwetsbaarheden verholpen in Fortinet FortiOS

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 (meerdere versies).
Interpretaties
De kwetsbaarheden omvatten een stack-gebaseerde buffer overflow die aanvallers in staat stelt om ongeautoriseerde code of commando's uit te voeren door speciaal vervaardigde pakketten te verzenden. Een specifieke kwetsbaarheid in de FortiOS CAPWAP-daemon stelt een externe, niet-geauthenticeerde aanvaller op een aangrenzend netwerk in staat om deze pakketten te verzenden, mits de aanvaller controle heeft over een geautoriseerde FortiAP en zich op hetzelfde lokale IP-subnet bevindt. Daarnaast kunnen geauthenticeerde beheerders de trusted host policy omzeilen door op maat gemaakte CLI-commando's uit te voeren, wat kan leiden tot ongeautoriseerde toegang of acties binnen de getroffen omgevingen.
Oplossingen
Fortinet heeft updates uitgebracht om de kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Kans
medium
Schade
high
CWE-121
Stack-based Buffer Overflow
CWE-269
Improper Privilege Management


To clipboard 

{
  "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 FortiOS (meerdere versies).",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De kwetsbaarheden omvatten een stack-gebaseerde buffer overflow die aanvallers in staat stelt om ongeautoriseerde code of commando\u0027s uit te voeren door speciaal vervaardigde pakketten te verzenden. Een specifieke kwetsbaarheid in de FortiOS CAPWAP-daemon stelt een externe, niet-geauthenticeerde aanvaller op een aangrenzend netwerk in staat om deze pakketten te verzenden, mits de aanvaller controle heeft over een geautoriseerde FortiAP en zich op hetzelfde lokale IP-subnet bevindt. Daarnaast kunnen geauthenticeerde beheerders de trusted host policy omzeilen door op maat gemaakte CLI-commando\u0027s uit te voeren, wat kan leiden tot ongeautoriseerde toegang of acties binnen de getroffen omgevingen.",
        "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": "Stack-based Buffer Overflow",
        "title": "CWE-121"
      },
      {
        "category": "general",
        "text": "Improper Privilege Management",
        "title": "CWE-269"
      }
    ],
    "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-25-358"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://fortiguard.fortinet.com/psirt/FG-IR-25-545"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://fortiguard.fortinet.com/psirt/FG-IR-25-632"
      }
    ],
    "title": "Kwetsbaarheden verholpen in Fortinet FortiOS",
    "tracking": {
      "current_release_date": "2025-11-19T08:35:31.999400Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
          "version": "1.3"
        }
      },
      "id": "NCSC-2025-0373",
      "initial_release_date": "2025-11-19T08:35:31.999400Z",
      "revision_history": [
        {
          "date": "2025-11-19T08:35:31.999400Z",
          "number": "1.0.0",
          "summary": "Initiele versie"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-1"
                }
              }
            ],
            "category": "product_name",
            "name": "FortiOS"
          }
        ],
        "category": "vendor",
        "name": "Fortinet"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-53843",
      "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 FortiOS enables attackers to execute unauthorized code via specially crafted packets.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-53843 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-53843.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:W/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2025-53843"
    },
    {
      "cve": "CVE-2025-54821",
      "cwe": {
        "id": "CWE-269",
        "name": "Improper Privilege Management"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Privilege Management",
          "title": "CWE-269"
        },
        {
          "category": "description",
          "text": "An Improper Privilege Management vulnerability in Fortinet FortiOS, FortiPAM, and FortiProxy allows authenticated administrators to bypass the trusted host policy using crafted CLI commands.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-54821 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-54821.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 1.9,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2025-54821"
    },
    {
      "cve": "CVE-2025-58413",
      "cwe": {
        "id": "CWE-121",
        "name": "Stack-based Buffer Overflow"
      },
      "notes": [
        {
          "category": "other",
          "text": "Stack-based Buffer Overflow",
          "title": "CWE-121"
        },
        {
          "category": "description",
          "text": "Fortinet FortiOS and FortiSASE have stack-based buffer overflow vulnerabilities that allow remote attackers to execute unauthorized code via specially crafted packets, affecting various versions of the software.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-58413 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2025/cve-2025-58413.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:W/RC:C",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2025-58413"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.