{"id":"CVE-2026-35616","published":"2026-04-04T01:16:39Z","modified":"2026-07-24T21:10:00Z","title":"Fortinet FortiClient EMS Improper Access Control Vulnerability","vendor":"Fortinet","product":"FortiClient EMS","tier":"core","eol":null,"description":{"text":"A improper access control vulnerability in Fortinet FortiClientEMS 7.4.5 through 7.4.6 may allow an unauthenticated attacker to execute unauthorized code or commands via crafted requests.","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is an improper access control vulnerability in the Fortinet FortiClient EMS product, affecting versions 7.4.5 through 7.4.6. An unauthenticated remote attacker who sends crafted requests may be able to execute unauthorized code or commands on the affected system, requiring no authentication and no user interaction.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:11:43Z"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.93983,"percentile":0.99846,"date":"2026-10-30","provenance":"source"},"kev":{"dateAdded":"2026-04-06","dueDate":"2026-04-09","ransomware":false,"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.","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-26-099 ; https://nvd.nist.gov/vuln/detail/CVE-2026-35616","provenance":"source"},"vulncheckKev":{"dateAdded":"2026-04-04","exploitedFirstSeen":"2026-04-04","ransomware":true,"evidence":[{"url":"https://www.fortiguard.com/psirt/FG-IR-26-099","date":"2026-04-04"},{"url":"https://x.com/DefusedCyber/status/2040315969159995847","date":"2026-04-04"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2026-04-06"},{"url":"https://x.com/DefusedCyber/status/2041235692123050317","date":"2026-04-06"},{"url":"https://defusedcyber.com/ai-vulnerability-storm-honeypot-zero-day-detection","date":"2026-04-15"},{"url":"https://arcticwolf.com/resources/blog-uk/forticlient-ems-exploited-cve-2026-35616-to-deliver-ekz-infostealer-disguised-as-a-fortinet-patch/","date":"2026-05-27"},{"url":"https://www.halcyon.ai/ransomware-evolution-report/q1-2026","date":"2026-06-11"},{"url":"https://www.techgines.com/post/fortibleed-fortigate-credential-compromise-86000-firewalls","date":"2026-06-21"},{"url":"https://www.esentire.com/blog/fortinet-vulnerability-cve-2026-35616-and-ekz-stealer-attacking-obfuscating-compilers-with-binary-ninja-workflows","date":"2026-06-25"},{"url":"https://cyble.com/reports/H1-2026-Global-Threat-Landscape-Report.pdf","date":"2026-07-27"}],"evidenceTotal":13,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev 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2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"INC and The Gentlemen Ransomware: Exposed AI Infrastructure","url":"https://otx.alienvault.com/pulse/6ad8db024c84442cd0085496","created":"2026-10-21"}],"provenance":"machine"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"references":[{"url":"https://fortiguard.fortinet.com/psirt/FG-IR-26-099","tags":["Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-35616","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Unauthenticated crafted requests to exposed 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