CVE-2026-1324 is an OS command injection vulnerability identified in the Sangfor Operation and Maintenance Management System (OMMS) versions 3.0.0 through 3.0.12. The vulnerability resides in the SessionController function of the SSH Protocol Handler component, specifically in the handling of the 'keypassword' argument within the /isomp-protocol/protocol/session file. An attacker can remotely send crafted input to this parameter, which is improperly sanitized, allowing arbitrary operating system commands to be executed on the underlying server. This vulnerability does not require authentication or user interaction, making it highly exploitable over the network. The CVSS 4.0 base score of 8.7 reflects its critical nature, with low attack complexity, no privileges required, and no user interaction needed. The vulnerability impacts confidentiality, integrity, and availability, as attackers can execute commands that may lead to data theft, system manipulation, or service disruption. Although the vendor was notified early, no patch or response has been provided, and public exploits have surfaced, increasing the risk of active exploitation. The affected product is used for operation and maintenance management, likely in enterprise environments, making the potential impact significant.

For European organizations, this vulnerability poses a severe risk due to the potential for remote, unauthenticated attackers to gain full control over affected systems. Compromise could lead to unauthorized access to sensitive operational data, disruption of critical maintenance processes, and potential lateral movement within networks. Organizations relying on Sangfor OMMS for infrastructure management, especially in sectors like telecommunications, energy, and government, could face operational outages or data breaches. The lack of vendor response and public exploit availability increases the likelihood of exploitation attempts. Additionally, attackers could leverage this vulnerability to establish persistent footholds or launch further attacks against connected systems. The impact extends beyond individual organizations to critical infrastructure and services, potentially affecting national security and economic stability in Europe.

1. Immediately restrict network access to the Sangfor OMMS management interfaces, limiting exposure to trusted IP addresses only. 2. Deploy network-level controls such as firewalls and intrusion detection/prevention systems (IDS/IPS) to monitor and block suspicious commands or anomalous traffic targeting the vulnerable component. 3. Conduct thorough logging and monitoring of all interactions with the SessionController function, focusing on the 'keypassword' parameter to detect exploitation attempts. 4. Isolate affected systems from critical networks until a patch or official fix is available. 5. Engage with Sangfor support channels persistently to obtain updates or patches; consider alternative vendor support if unresponsive. 6. Apply application-layer input validation and sanitization where possible as a temporary mitigation. 7. Prepare incident response plans specific to exploitation scenarios involving this vulnerability. 8. Evaluate the feasibility of replacing or upgrading the affected product to versions not impacted or alternative solutions. 9. Educate relevant IT and security teams about the vulnerability and exploitation indicators to enhance detection and response capabilities.