CVE-2026-1413 is a command injection vulnerability affecting Sangfor's Operation and Maintenance Security Management System versions 3.0.0 through 3.0.12. The vulnerability resides in the portValidate function, specifically in the HTTP POST request handler located at /fort/ip_and_port/port_validate. An attacker can manipulate the 'port' parameter in the POST request to inject and execute arbitrary system commands remotely. This flaw arises due to insufficient input validation or sanitization of the 'port' argument before it is passed to system-level command execution functions. The vulnerability requires the attacker to have limited privileges (PR:L) but does not require user interaction (UI:N) or authentication (AT:N), making it remotely exploitable over the network with relatively low complexity (AC:L). The impact includes potential unauthorized command execution leading to confidentiality breaches, integrity violations, and availability disruptions of the affected system. The CVSS 4.0 vector indicates partial impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). Although no known exploits are currently observed in the wild, the public disclosure increases the risk of exploitation. The lack of available patches at the time of reporting necessitates immediate mitigation efforts. Sangfor's product is typically deployed in enterprise environments for security management and network operations, making this vulnerability critical to address to prevent lateral movement or full system compromise.

For European organizations, exploitation of CVE-2026-1413 could lead to unauthorized remote command execution on critical security management infrastructure. This could result in attackers gaining control over network operation systems, potentially disrupting network monitoring, altering security configurations, or deploying further malware. The compromise of such systems could cascade into broader network breaches, data exfiltration, or denial of service conditions. Given the role of the affected product in maintaining operational security, the integrity and availability of network defenses could be undermined, increasing exposure to subsequent attacks. Organizations in sectors such as finance, telecommunications, energy, and government are particularly at risk due to their reliance on robust security management systems. The medium severity rating suggests a moderate but tangible risk that requires timely remediation to avoid escalation. The remote exploitability without user interaction heightens the threat, especially in environments where Sangfor products are internet-facing or insufficiently segmented.

1. Immediate application of vendor patches or updates once available is the most effective mitigation. Monitor Sangfor advisories for official fixes. 2. Until patches are released, restrict network access to the affected HTTP POST endpoint (/fort/ip_and_port/port_validate) using firewall rules or network segmentation to limit exposure. 3. Implement strict input validation and sanitization at the application or web server level to block malicious payloads targeting the 'port' parameter. 4. Employ intrusion detection/prevention systems (IDS/IPS) with signatures or anomaly detection rules to identify and block suspicious command injection attempts. 5. Conduct thorough privilege audits to ensure that accounts interacting with the system have minimal necessary permissions, reducing the impact of potential exploitation. 6. Monitor logs for unusual activity related to the portValidate function or unexpected command executions. 7. Educate security teams about this vulnerability to enable rapid incident response. 8. Consider deploying web application firewalls (WAFs) with custom rules to detect and block command injection patterns targeting this endpoint.