CVE-2026-35616
Description
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.
In plain language
AI Act nowCVE-2026-35616 is a critical flaw in Fortinet FortiClientEMS (7.4.5 through 7.4.6) that allows an unauthenticated attacker to run unauthorized commands, so most small businesses using this software should act immediately.
What to do
- Immediately update Fortinet FortiClientEMS off versions 7.4.5 and 7.4.6 to a fixed release (ask your IT/vendor for the exact patched version). 2) If you cannot update right away, restrict network access to FortiClientEMS so it is not reachable from the internet. 3) Check with your IT person whether your FortiClientEMS instance is exposed externally and confirm it is patched as soon as possible.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
Fortinet
commercial·USaka forti net
Fortinet Inc.
commercial·USaka fortinet
and 1 more affected products View all →
Exploitability
CISA Known Exploited Vulnerability
Added to KEV:Apr 6, 2026
Remediation due:Apr 9, 2026
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.
Official Patch Available
References
https://fortiguard.fortinet.com/psirt/FG-IR-26-099
fortiguard.fortinet.com
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-35616
cisa.gov
https://fortiguard.fortinet.com/psirt/FG-IR-26-099
fortiguard.fortinet.com
and 4 more references View all →
News mentions
11- FortiBleed Credential Theft Linked to INC and Lynx Ransomware Operationsen·The Hacker News· Exploited FortiGate ransomware
- JDY Botnet Resurges: China-Nexus IoT Army Hunts New Vulnerabilities Within Hoursen-us·Daily CyberSecurity (securityonline.info)· Exploited JDY botnet Volt Typhoon
- 3 Recently Patched Fortinet FortiSandbox Vulnerabilities in Hacker Crosshairsen-us·SecurityWeek· Exploited FortiSandbox rce
- Attackers Exploit Three Fortinet FortiSandbox Flaws, One Patched Last Weeken·The Hacker News· Exploited FortiSandbox rce
- China-Linked JDY Botnet Expands to 1,500+ Devices for Cyber Reconnaissanceen·The Hacker News· Research JDY botnet (scanner malware) Volt Typhoon
- China-linked JDY botnet expands targeting of U.S. military networksen-us·BleepingComputer· Exploited JDY botnet China-nexus advanced persistent threat (APT) actors
- PAN-OS GlobalProtect Authentication Bypass (CVE-2026-0257) Under Active Exploitationen·The Hacker News· Exploited PAN-OS network-edge
- Dutch police take down giant botnet of 17 million devicesen·Risky Business News· Exploited Asocks ddos-botnet
- Threat Actors Exploit Critical FortiClient EMS Flaw to Deploy Credential Stealeren·The Hacker News· Exploited FortiClient Endpoint Management Server (EMS) auth-bypass
- 13th April – Threat Intelligence Reporten-us·Check Point Research· Exploited Bitcoin Depot wallets/crypto-ATM systems Qilin
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