CVE-2025-59669
📋 TL;DR
This vulnerability involves hard-coded credentials in Fortinet FortiWeb web application firewalls that could allow authenticated attackers with shell access to connect to the Redis service and access its data. Affected systems include FortiWeb versions 7.0 through 7.6.0. The vulnerability requires authenticated shell access to exploit.
💻 Affected Systems
- Fortinet FortiWeb
📦 What is this software?
Fortiweb by Fortinet
⚠️ Risk & Real-World Impact
Worst Case
An authenticated attacker with shell access could access sensitive Redis data, potentially including configuration data, session information, or other cached data stored in Redis.
Likely Case
An authenticated malicious insider or compromised administrator account could access Redis data, potentially exposing sensitive configuration or cached application data.
If Mitigated
With proper access controls limiting shell access to trusted administrators only, the risk is significantly reduced as only authorized personnel could exploit the vulnerability.
🎯 Exploit Status
Exploitation requires authenticated shell access to the device. The hard-coded credentials would need to be discovered or known to the attacker.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: FortiWeb 7.6.1 and later
Vendor Advisory: https://fortiguard.fortinet.com/psirt/FG-IR-25-843
Restart Required: Yes
Instructions:
1. Log into FortiWeb management interface. 2. Navigate to System > Dashboard. 3. Check for available firmware updates. 4. Download and install FortiWeb 7.6.1 or later. 5. Reboot the device after installation completes.
🔧 Temporary Workarounds
Restrict Shell Access
allLimit shell access to only trusted administrators and implement strict access controls.
Network Segmentation
allIsolate FortiWeb management interfaces from general network access and implement strict firewall rules.
🧯 If You Can't Patch
- Implement strict access controls to limit shell access to only essential, trusted administrators.
- Monitor Redis service access logs for unauthorized connection attempts and implement network segmentation to isolate FortiWeb devices.
🔍 How to Verify
Check if Vulnerable:
Check FortiWeb version via CLI: 'get system status' or via web interface: System > Dashboard. If version is 7.0.x, 7.2.x, 7.4.x, or 7.6.0, the device is vulnerable.Check Version:
get system statusVerify Fix Applied:
After patching, verify version is 7.6.1 or later using 'get system status' command or web interface dashboard.📡 Detection & Monitoring
Log Indicators:
- Unauthorized Redis connection attempts from shell users
- Multiple failed authentication attempts to Redis service
Network Indicators:
- Unexpected connections to Redis port (default 6379) from management interfaces
SIEM Query:
source="fortiweb" AND (event="redis_connection" OR port=6379) AND user!="authorized_admin"