CVE-2025-44883
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on affected FW-WGS-804HPT devices via a stack overflow in the web interface. Attackers can exploit this without authentication by sending specially crafted requests to the tacIp parameter. All users running the vulnerable firmware version are affected.
💻 Affected Systems
- FW-WGS-804HPT
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise leading to persistent backdoor installation, data exfiltration, and use as a pivot point into internal networks.
Likely Case
Remote code execution allowing attackers to modify device configuration, intercept network traffic, or launch attacks against other systems.
If Mitigated
Denial of service or limited information disclosure if exploit attempts are detected and blocked.
🎯 Exploit Status
The vulnerability is well-documented with technical details available, making weaponization straightforward for attackers with moderate skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch is currently available. Monitor vendor website for firmware updates addressing CVE-2025-44883.
🔧 Temporary Workarounds
Disable web interface
allDisable the web administration interface if not required for operations
Configuration varies by device - consult device documentation for disabling web interface
Network segmentation
linuxRestrict access to the device's management interface using firewall rules
iptables -A INPUT -p tcp --dport 80 -s trusted_ip -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s trusted_ip -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Implement strict network access controls to limit who can reach the device's management interface
- Monitor for exploit attempts using the detection signatures provided below
🔍 How to Verify
Check if Vulnerable:
Check firmware version via device web interface or CLI. If version is v1.305b241111, the device is vulnerable.Check Version:
Check via web interface at System > Status > Firmware Version or via device-specific CLI commandsVerify Fix Applied:
Verify firmware version has been updated to a version later than v1.305b241111📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /web_tacplus_serverEdit_post endpoint
- Multiple failed authentication attempts followed by successful exploitation
- System logs showing unexpected process execution or configuration changes
Network Indicators:
- HTTP POST requests containing unusually long tacIp parameter values
- Traffic to the device's web interface from unexpected source IPs
- Outbound connections from the device to suspicious external IPs
SIEM Query:
source="fw-wgs-804hpt" AND (uri="/web_tacplus_serverEdit_post" OR (http_method="POST" AND uri CONTAINS "tacplus"))