CVE-2026-19656 in ScadaLTS
Summary
by MITRE • 08/12/2026
ScadaLTS 2.7.8.1 exposes a server-side method that lacks authorization checks, allowing any authenticated user (including one holding only low-privilege, read-only permissions) to execute arbitrary operating system commands on the host. Successful exploitation results in code execution in the context of the ScadaLTS server process (root), leading to full compromise of the underlying system.
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Analysis
by VulDB Data Team • 08/12/2026
This vulnerability represents a critical authorization bypass flaw in ScadaLTS 2.7.8.1 that fundamentally undermines the security model of the industrial control system. The issue stems from a server-side method that fails to implement proper access controls, creating an arbitrary code execution vector that can be exploited by any authenticated user regardless of their privilege level. This design flaw directly violates the principle of least privilege and demonstrates a severe failure in the application's security architecture.
The technical implementation of this vulnerability allows even read-only users to execute operating system commands with elevated privileges equivalent to the ScadaLTS server process, which typically runs with root-level permissions on Unix-like systems. This misconfiguration creates a path for attackers to escalate their access from basic read-only capabilities to complete system compromise without requiring additional authentication or privilege escalation techniques. The vulnerability operates at the application layer and can be exploited through standard network communication channels used by the ScadaLTS service.
The operational impact of this vulnerability extends far beyond simple unauthorized command execution, as it provides attackers with complete control over the underlying host system. This includes the ability to modify or delete critical system files, install backdoors, access sensitive data stored on the server, and potentially disrupt industrial processes managed by the SCADA system. The compromise of a single ScadaLTS server can lead to cascading effects throughout the industrial network, potentially affecting multiple connected systems and processes that depend on the compromised infrastructure.
Organizations implementing ScadaLTS 2.7.8.1 should immediately implement mitigations including applying the vendor-provided security patches, restricting network access to the ScadaLTS service through firewalls, implementing network segmentation to isolate critical industrial control systems, and conducting thorough security audits of all SCADA components. The vulnerability aligns with CWE-863 (Authorization Bypass Through User-Controlled Key) and represents a significant risk under ATT&CK framework category T1059 (Command and Scripting Interpreter) with potential lateral movement capabilities through the compromised system. Security monitoring should focus on unusual command execution patterns and unauthorized access attempts to server-side methods that should remain restricted to administrative users only.
This vulnerability highlights the critical importance of proper input validation and access control implementation in industrial control systems where security failures can have severe operational consequences. The flaw demonstrates how insufficient authorization checks in enterprise applications can create pathways for attackers to achieve system-level compromise, emphasizing the need for comprehensive security testing including penetration testing and code reviews specifically focused on authentication and authorization mechanisms within critical infrastructure software.