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How the CVE Works:
CVE-2025-22252 is an authentication bypass vulnerability affecting Fortinet FortiProxy (7.6.0-7.6.1), FortiSwitchManager (7.2.5), and FortiOS (7.4.4-7.4.6, 7.6.0). The flaw stems from improper session validation, allowing an attacker with prior knowledge of an admin account to bypass authentication entirely. By crafting a malicious request or reusing session tokens, an attacker gains administrative privileges without valid credentials. The vulnerability resides in the web management interface, where insufficient checks enable unauthorized access to critical functions.
DailyCVE Form:
Platform: Fortinet FortiProxy/FortiOS
Version: 7.6.0-7.6.1, 7.4.4-7.4.6
Vulnerability: Authentication Bypass
Severity: Critical
Date: 06/04/2025
Prediction: Patch expected by 07/15/2025
What Undercode Say:
Exploitation:
- Session Hijacking: Intercept valid admin session tokens via MITM.
- Request Forgery: Craft unauthorized API calls to
/api/v2/cmdb/system/admin.
3. Brute Force: Exploit weak session expiration policies.
Protection:
- Immediate Workaround: Disable HTTP/HTTPS admin access, use CLI.
- Network Controls: Restrict management interface to trusted IPs.
3. Patch Monitoring: Track Fortinet advisory FG-IR-25-012.
Detection Commands:
Check active sessions (FortiGate CLI): diagnose sys session list | grep "admin" Verify firmware version: get system status | grep "Version"
Mitigation Script (Temporary):
import requests
headers = {"Authorization": "Bearer VALID_TOKEN"}
response = requests.post("https://<FORTIGATE_IP>/api/v2/cmdb/system/admin", headers=headers, json={"action": "disable", "user": "attacker"})
print(response.status_code)
Log Analysis:
Filter auth bypass attempts: grep "authentication failed" /var/log/messages | grep "admin"
Expected Patch Actions:
- Fortinet will enforce strict session validation.
- Update to fixed versions (7.6.2, 7.4.7).
- Audit logs for `CVE-2025-22252` exploitation patterns.
References:
- Fortinet Advisory
- CWE-287: Improper Authentication
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
