CVE-2026-1413 is a command injection vulnerability found in the Sangfor Operation and Maintenance Security Management System, specifically in versions 3.0.0 through 3.0.12. The flaw exists in the portValidate function located in the /fort/ip_and_port/port_validate component, which handles HTTP POST requests. By manipulating the 'port' argument in the HTTP POST request, an attacker can inject arbitrary commands that the system executes. This vulnerability does not require authentication or user interaction, making it remotely exploitable over the network. The CVSS 4.0 base score is 5.3, reflecting medium severity, with attack vector as network, low attack complexity, no privileges required, and no user interaction needed. The impact includes potential compromise of system confidentiality, integrity, and availability due to arbitrary command execution. Although no active exploits have been reported in the wild, a public exploit exists, increasing the risk of exploitation. The vulnerability arises from insufficient input validation and improper sanitization of user-supplied data in the port parameter, allowing command injection. This can lead to full system compromise, data leakage, or denial of service depending on the attacker's commands. The affected product is used for operation and maintenance security management, making it a critical asset in network security environments.

The vulnerability allows remote attackers to execute arbitrary commands on affected systems without authentication, potentially leading to full system compromise. This can result in unauthorized access to sensitive data, disruption of security management operations, and manipulation or destruction of system configurations. Organizations relying on Sangfor Operation and Maintenance Security Management System for network security monitoring and management could face significant operational disruptions. The compromise could also serve as a foothold for lateral movement within networks, increasing the risk of broader breaches. Given the public availability of an exploit, the likelihood of attacks increases, especially in environments where patching is delayed. The impact extends to confidentiality, integrity, and availability, threatening critical infrastructure and enterprise security management capabilities.

1. Upgrade Sangfor Operation and Maintenance Security Management System to a version later than 3.0.12 once the vendor releases a patch addressing CVE-2026-1413. 2. If immediate patching is not possible, implement strict input validation and sanitization on the port parameter at the web application firewall (WAF) or reverse proxy level to block malicious payloads attempting command injection. 3. Restrict network access to the management interface to trusted IP addresses and use VPNs or secure tunnels to limit exposure. 4. Monitor logs for unusual POST requests to /fort/ip_and_port/port_validate, especially those containing suspicious port parameter values or shell metacharacters. 5. Employ intrusion detection/prevention systems (IDS/IPS) signatures that detect command injection attempts targeting Sangfor products. 6. Conduct regular security audits and penetration testing focusing on input validation weaknesses in the management system. 7. Educate administrators on the risks of exposing management interfaces publicly and enforce the principle of least privilege for system access.