CIS Advisories

A Vulnerability in Fortinet FortiClientEMS Could Allow for Arbitrary Code Execution

2026-04-04 · Read original ↗

ATT&CK techniques detected

3 predictions

T1078.001Default Accounts

76%

“assets and software : manage default accounts on enterprise assets and software, such as root, administrator, and other pre - configured vendor accounts. example implementations can include : disabling default accounts or making them unusable. - safeguard 5. 4 : restrict administ…”

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T1068Exploitation for Privilege Escalation

54%

“a vulnerability in fortinet forticlientems could allow for arbitrary code execution a vulnerability in fortinet forticlientems could allow for arbitrary code execution ms - isac advisory number : 2026 - 031date ( s ) issued : 04 / 04 / 2026overview : a vulnerability has been disc…”

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T1078.001Default Accounts

41%

“, such as network, web application, application programming interface ( api ), hosted services, and physical premise controls ; frequency ; limitations, such as acceptable hours, and excluded attack types ; point of contact information ; remediation, such as how findings will be …”

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Summary

A Vulnerability has been discovered in Fortinet FortiClientEMS that could allow for arbitrary code execution. FortiClientEMS is a centralized management platform for deploying, configuring, monitoring, and enforcing security policies across numerous endpoints (computers) running the FortiClient agent.

Successful exploitation of this vulnerability could allow for arbitrary code execution in the context of the affected service account. Depending on the privileges associated with the service account an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Service accounts that are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.