Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel Vulnerability - CVE-2026-24858
Affected Systems:
Fortinet Multiple Products
Executive Summary
Fortinet FortiAnalyzer, FortiManager, FortiOS, and FortiProxy contain an authentication bypass using an alternate path or channel that could allow an attacker with a FortiCloud account and a registered device to log into other devices registered to other accounts, if FortiCloud SSO authentication is enabled on those devices.
CVSS Score: 9.0/10.0
Severity: CRITICAL
Affected Systems
- Fortinet Multiple Products
Detection & Mitigation
- Apply vendor patches as soon as available
- Monitor for indicators of compromise
- Review vendor advisories for specific guidance