CVE-2025-54973
📋 TL;DR
A race condition vulnerability in Fortinet FortiAnalyzer allows attackers to bypass FortiCloud SSO authorization by sending specially crafted requests during concurrent execution. This affects FortiAnalyzer versions 7.6.0-7.6.2, 7.4.0-7.4.6, 7.2.0-7.2.10, and before 7.0.13. Organizations using these versions with FortiCloud SSO enabled are vulnerable.
💻 Affected Systems
- Fortinet FortiAnalyzer
📦 What is this software?
Fortianalyzer by Fortinet
Fortianalyzer by Fortinet
Fortianalyzer by Fortinet
Fortianalyzer by Fortinet
⚠️ Risk & Real-World Impact
Worst Case
Complete bypass of FortiCloud SSO authentication, allowing unauthorized access to FortiAnalyzer administrative functions and potentially compromising the entire security management infrastructure.
Likely Case
Unauthorized access to FortiAnalyzer with limited privileges, potentially enabling configuration changes, log tampering, or data exfiltration.
If Mitigated
Minimal impact if proper network segmentation, access controls, and monitoring are in place to detect and block unauthorized access attempts.
🎯 Exploit Status
Exploitation requires precise timing of concurrent requests and knowledge of FortiCloud SSO implementation details. No public exploits are currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.6.3, 7.4.7, 7.2.11, 7.0.13 and later
Vendor Advisory: https://fortiguard.fortinet.com/psirt/FG-IR-25-198
Restart Required: No
Instructions:
1. Log into FortiAnalyzer web interface. 2. Navigate to System > Dashboard. 3. Check for available firmware updates. 4. Download and install the appropriate patched version (7.6.3, 7.4.7, 7.2.11, or 7.0.13+). 5. Verify the update completed successfully.
🔧 Temporary Workarounds
Disable FortiCloud SSO
allTemporarily disable FortiCloud SSO authentication and use local authentication or alternative SSO methods until patching is complete.
config system admin
edit <admin_user>
set accprofile <profile_name>
set trusthost1 <ip_address>
set authentication-type local
end
Restrict Management Access
allLimit access to FortiAnalyzer management interface to trusted IP addresses only.
config system interface
edit <mgmt_interface>
set allowaccess https ssh
set trust-ip-1 <trusted_ip>/<mask>
end
🧯 If You Can't Patch
- Implement strict network segmentation to isolate FortiAnalyzer from untrusted networks
- Enable detailed logging and monitoring for authentication attempts and configuration changes
🔍 How to Verify
Check if Vulnerable:
Check FortiAnalyzer version via web interface (System > Dashboard) or CLI (get system status). Verify if version falls within affected ranges and FortiCloud SSO is enabled.Check Version:
get system status | grep VersionVerify Fix Applied:
After updating, confirm version is 7.6.3, 7.4.7, 7.2.11, 7.0.13 or later. Test FortiCloud SSO functionality to ensure it works properly without authentication bypass.📡 Detection & Monitoring
Log Indicators:
- Multiple concurrent authentication requests from same source
- Successful logins without proper SSO tokens
- Authentication failures followed by immediate successes
Network Indicators:
- Unusual spike in HTTPS requests to FortiAnalyzer management interface
- Rapid sequence of authentication-related API calls
SIEM Query:
source="fortianalyzer" AND (event_type="authentication" OR event_type="login") | stats count by src_ip, user, result | where count > threshold