CVE-2026-1413
📋 TL;DR
This CVE describes a command injection vulnerability in Sangfor Operation and Maintenance Security Management System that allows remote attackers to execute arbitrary commands on affected systems. The vulnerability exists in the portValidate function when processing HTTP POST requests. Organizations using Sangfor O&M Security Management System versions up to 3.0.12 are affected.
💻 Affected Systems
- Sangfor Operation and Maintenance Security Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attacker to execute arbitrary commands with system privileges, potentially leading to data theft, ransomware deployment, or complete system takeover.
Likely Case
Remote code execution leading to unauthorized access, data exfiltration, or lateral movement within the network.
If Mitigated
Limited impact if proper network segmentation, least privilege principles, and input validation are implemented.
🎯 Exploit Status
Exploit details are publicly available on GitHub, making this easily exploitable by attackers with basic skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Contact Sangfor for official patch information
2. Monitor Sangfor security advisories
3. Apply any available patches immediately
🔧 Temporary Workarounds
Network Access Control
linuxRestrict access to the vulnerable endpoint using firewall rules or network segmentation
iptables -A INPUT -p tcp --dport [PORT] -s [TRUSTED_IPS] -j ACCEPT
iptables -A INPUT -p tcp --dport [PORT] -j DROP
Web Application Firewall
allDeploy WAF rules to block command injection patterns in POST requests to /fort/ip_and_port/port_validate
🧯 If You Can't Patch
- Isolate affected systems in a separate network segment with strict access controls
- Implement application-level input validation and sanitization for port parameter
🔍 How to Verify
Check if Vulnerable:
Check system version via web interface or configuration files, verify if version is ≤3.0.12Check Version:
Check web interface or configuration files for version informationVerify Fix Applied:
Verify system version is >3.0.12 or test with safe payload to confirm command injection is prevented📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /fort/ip_and_port/port_validate
- System commands executed from web process
- Suspicious process creation from web server
Network Indicators:
- POST requests to vulnerable endpoint with shell metacharacters in port parameter
- Outbound connections from web server to unusual destinations
SIEM Query:
source="web_logs" AND uri="/fort/ip_and_port/port_validate" AND (port="*;*" OR port="*|*" OR port="*`*" OR port="*$(*" OR port="*&*" OR port="*>*" OR port="*<*")