CVE-2025-12195
📋 TL;DR
An authenticated privileged user can execute arbitrary code on WatchGuard Fireware OS devices by sending specially crafted IPSec configuration commands through the CLI. This out-of-bounds write vulnerability affects Fireware OS versions 11.0-11.12.4, 12.0-12.11.4, 12.5-12.5.13, and 2025.1-2025.1.2.
💻 Affected Systems
- WatchGuard Fireware OS
📦 What is this software?
Fireware by Watchguard
Fireware by Watchguard
Fireware by Watchguard
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise leading to network infiltration, data exfiltration, or use as pivot point for lateral movement.
Likely Case
Privileged authenticated attacker gains root access to firewall, enabling traffic interception, rule modification, or persistence.
If Mitigated
Limited impact due to strict access controls, network segmentation, and monitoring preventing exploitation attempts.
🎯 Exploit Status
Exploitation requires authenticated privileged access and knowledge of IPSec configuration commands.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific fixed versions per release branch
Vendor Advisory: https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00019
Restart Required: Yes
Instructions:
1. Review vendor advisory for fixed versions. 2. Backup configuration. 3. Download appropriate firmware update. 4. Apply update via Web UI or CLI. 5. Reboot device. 6. Verify version and functionality.
🔧 Temporary Workarounds
Restrict CLI Access
allLimit CLI access to only trusted administrators using strict access controls.
Monitor IPSec Configuration Changes
allImplement logging and alerting for IPSec configuration modifications.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate vulnerable devices
- Enforce least privilege access controls and monitor privileged user activities
🔍 How to Verify
Check if Vulnerable:
Check Fireware OS version via Web UI (System > About) or CLI (show version). Compare against affected version ranges.Check Version:
show versionVerify Fix Applied:
Verify version is updated beyond affected ranges and test IPSec functionality.📡 Detection & Monitoring
Log Indicators:
- Unusual IPSec configuration changes
- Multiple failed CLI authentication attempts followed by successful login
- Unexpected CLI sessions from unusual sources
Network Indicators:
- Anomalous outbound connections from firewall
- Unexpected IPSec tunnel establishment
SIEM Query:
source="firewall_logs" AND (event_type="cli_command" AND command="*ipsec*") OR (auth_failure AND subsequent_success)