SB2026040404 - Authentication bypass and remote code execution in Fortinet FortiClientEMS
Published: April 4, 2026
Security Bulletin ID
SB2026040404
Severity
Critical
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Missing authorization (CVE-ID: CVE-2026-35616)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to missing authorization checks. A remote non-authenticated attacker can send a specially crafted HTTP request to certain API endpoint and execute arbitrary commands on the system.
Note, the vulnerability is being actively exploited in the wild.
Remediation
Install update from vendor's website.