NCSC-2026-0107

Vulnerability from csaf_ncscnl - Published: 2026-04-04 13:49 - Updated: 2026-04-04 13:49
Summary
Kwetsbaarheid verholpen in FortiClient EMS van Fortinet
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 een kwetsbaarheid verholpen in FortiClient EMS.
Interpretaties: De kwetsbaarheid betreft een onjuiste toegangscontrole in FortiClient EMS. Ongeauthenticeerde aanvallers kunnen door het versturen van speciaal opgemaakte verzoeken beveiligingscontroles omzeilen en ongeautoriseerde code of commando's uitvoeren. De kwetsbaarheid kan op afstand worden misbruikt zonder authenticatie, wat kan leiden tot ongeautoriseerde manipulatie van het systeem. Fortinet meldt informatie te hebben dat de kwetsbaarheid actief wordt misbruikt. Er is (nog) geen publieke Proof-of-Concept-code of exploit bekend. Het NCSC verwacht op korte termijn wel publieke Proof-of-Concept-code of exploits, waardoor de kans op scanverkeer en grootschalig misbruik toeneemt.
Oplossingen: Fortinet heeft updates uitgebracht om de kwetsbaarheid te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Kans: high
Schade: high
CWE-284: Improper Access Control

An improper access control vulnerability in Fortinet FortiClientEMS versions 7.4.5 to 7.4.6 enables unauthenticated attackers to execute unauthorized code or commands via crafted requests.


{
  "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 een kwetsbaarheid verholpen in FortiClient EMS.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De kwetsbaarheid betreft een onjuiste toegangscontrole in FortiClient EMS. Ongeauthenticeerde aanvallers kunnen door het versturen van speciaal opgemaakte verzoeken beveiligingscontroles omzeilen en ongeautoriseerde code of commando\u0027s uitvoeren. De kwetsbaarheid kan op afstand worden misbruikt zonder authenticatie, wat kan leiden tot ongeautoriseerde manipulatie van het systeem.\n\nFortinet meldt informatie te hebben dat de kwetsbaarheid actief wordt misbruikt. Er is (nog) geen publieke Proof-of-Concept-code of exploit bekend. Het NCSC verwacht op korte termijn wel publieke Proof-of-Concept-code of exploits, waardoor de kans op scanverkeer en grootschalig misbruik toeneemt.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Fortinet heeft updates uitgebracht om de kwetsbaarheid 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 Access Control",
        "title": "CWE-284"
      }
    ],
    "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-26-099"
      }
    ],
    "title": "Kwetsbaarheid verholpen in FortiClient EMS van Fortinet",
    "tracking": {
      "current_release_date": "2026-04-04T13:49:19.002116Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
          "version": "1.3"
        }
      },
      "id": "NCSC-2026-0107",
      "initial_release_date": "2026-04-04T13:49:19.002116Z",
      "revision_history": [
        {
          "date": "2026-04-04T13:49:19.002116Z",
          "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": "Forticlient EMS"
          }
        ],
        "category": "vendor",
        "name": "Fortinet"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-35616",
      "notes": [
        {
          "category": "description",
          "text": "An improper access control vulnerability in Fortinet FortiClientEMS versions 7.4.5 to 7.4.6 enables unauthenticated attackers to execute unauthorized code or commands via crafted requests.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-35616 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-35616.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2026-35616"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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