{"id":"CVE-2026-35616","kind":"vulnerability","aliases":["CVE-2026-35616"],"related":[],"title":"A improper access control vulnerability in Fortinet FortiClientEMS 7.4.5 through 7.4.6 may allow an unauthenticated…","description":"Fortinet FortiClient EMS contains an improper access control vulnerability that may allow an unauthenticated attacker to execute unauthorized code or commands via crafted requests.\n\nCISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","summary":"Fortinet FortiClient EMS, the endpoint management server for FortiClient, has an improper access control flaw that lets an unauthenticated attacker run unauthorized code or commands through crafted requests. CISA lists it as actively exploited in the wild.","severity":"critical","cvss":9.8,"epss":null,"exploited":true,"exploited_at":"2026-04-06T00:00:00+00:00","products":[{"name":"Fortinet FortiClient EMS","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"fortinet forticlientems","fixed":[],"affected":"= 7.4.5","ecosystem":"vendor"},{"name":"fortinet forticlientems","fixed":[],"affected":"= 7.4.6","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["endpoint-management","exploited","forticlient-ems","fortinet","vendor","windows"],"not_affected_if":["no-forticlient-ems-deployed"],"how_to_check":"Identify FortiClient EMS servers on your network and confirm their installed version against the Fortinet PSIRT advisory (unknown from sources).\nCheck whether the EMS admin interface is reachable from the internet.\nReview EMS logs for unexpected requests (unknown from sources).","fix":"Apply the mitigation or patch per Fortinet's vendor instructions (version not stated in sources).\nIf no mitigation is available, discontinue use of the product as CISA's required action directs.","status":"open","published_at":"2026-04-04T01:16:39+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:38:56+00:00","updated_at":"2026-10-23T23:44:51+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-23T20:38:56Z","model":"claude-haiku-5-5","output":{"fix":"Apply the mitigation or patch per Fortinet's vendor instructions (version not stated in sources).\nIf no mitigation is available, discontinue use of the product as CISA's required action directs.","reach":"unknown","summary":"Fortinet FortiClient EMS, the endpoint management server for FortiClient, has an improper access control flaw that lets an unauthenticated attacker run unauthorized code or commands through crafted requests. CISA lists it as actively exploited in the wild.","category":"vendor","who_cares":["fortinet","forticlient-ems","endpoint-management","windows"],"confidence":0.6,"needs_auth":"no","worst_case":"Unauthenticated attacker runs arbitrary commands on the EMS server.","analyst_note":"Find the Fortinet PSIRT advisory for CVE-2026-35616 to get affected and fixed versions and the exact mitigation steps.","how_to_check":"Identify FortiClient EMS servers on your network and confirm their installed version against the Fortinet PSIRT advisory (unknown from sources).\nCheck whether the EMS admin interface is reachable from the internet.\nReview EMS logs for unexpected requests (unknown from sources).","needs_analyst":true,"not_affected_if":["no-forticlient-ems-deployed"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000498,"input_tokens":2549,"output_tokens":486,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-01':112C '-2026':17A,20A '-35616':18A,21A '22':111C '7.4.5':9A '7.4.6':11A 'access':3A,51B,82C 'action':102C 'activ':71B 'allow':13A,87C 'appli':103C 'applic':109C 'attack':58B,90C 'bod':110C 'cisa':67B,100C 'cloud':115C 'code':61B,94C 'command':63B,96C 'contain':79C 'control':4A,52B,83C 'craft':65B,98C 'cve':16A,19A 'discontinu':118C 'em':35B,41B,78C 'ems':24A 'endpoint':30B,43B 'endpoint-manag':29B 'execut':92C 'exploit':32B,72B 'flaw':53B 'follow':108C 'forticli':34B,40B,47B,77C 'forticlient':23A 'forticlient-em':33B 'forticlientem':8A 'forticlientems':26A,28A 'fortinet':7A,22A,25A,27A,36B,39B,76C 'guidanc':113C 'improp':2A,50B,81C 'instruct':107C 'let':55B 'list':68B 'manag':31B,44B 'may':12A,86C 'mitig':104C,124C 'per':105C 'product':122C 'request':66B,99C 'requir':101C 'run':59B 'server':45B 'servic':116C 'unauthent':15A,57B,89C 'unauthor':60B,93C 'unavail':126C 'use':119C 'vendor':37B,106C 'via':97C 'vulner':5A,84C 'wild':75B 'window':38B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2026-04-04T01:16:39+00:00","kev":{"dateAdded":"2026-04-06","dueDate":"2026-04-09","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.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_by":"psirt@fortinet.com","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2026-35616","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-35616","severity":null,"published_at":"2026-04-06T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T12:39:21+00:00","note":null},{"source":"nvd","external_id":"CVE-2026-35616","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35616","severity":null,"published_at":"2026-04-04T01:16:39+00:00","modified_at":"2026-07-24T21:10:00+00:00","first_seen_at":"2026-10-23T23:44:51+00:00","fetched_at":"2026-10-23T23:44:51+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}