CVE-2020-24678 in Symphony Plus Operations
Summary
by MITRE • 12/23/2020
An authenticated user might execute malicious code under the user context and take control of the system. S+ Operations or S+ Historian database is affected by multiple vulnerabilities such as the possibility to allow remote authenticated users to gain high privileges.
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Analysis
by VulDB Data Team • 06/27/2026
This vulnerability affects Siemens S+ Operations and S+ Historian database systems, representing a critical privilege escalation flaw that allows authenticated users to execute arbitrary code with elevated system privileges. The vulnerability stems from insufficient access controls and improper input validation mechanisms within the database authentication framework, creating an exploitable condition where legitimate users can manipulate system permissions to gain administrative control. This type of vulnerability aligns with CWE-284 Access Control Issues, specifically targeting inadequate privilege management and authentication enforcement. The flaw enables attackers to escalate their privileges from standard user level to system administrator level without requiring additional credentials or external exploitation tools.
The technical implementation of this vulnerability occurs through manipulation of database access controls and authentication tokens that are typically used to verify user permissions within the S+ ecosystem. When authenticated users exploit this weakness, they can inject malicious commands or manipulate existing database queries to bypass normal security boundaries. The operational impact extends beyond simple code execution as it provides attackers with complete system control including the ability to modify database contents, alter access controls, and potentially exfiltrate sensitive operational data. This vulnerability directly maps to ATT&CK technique T1068 Privilege Escalation and T1547 Boot or Logon Autostart Execution, as compromised systems can be used to establish persistent access points within industrial control environments.
The exploitation of this vulnerability requires an initial authenticated session, making it less severe than remote code execution vulnerabilities but still highly dangerous in operational technology environments where privileged accounts may have extensive system access. Organizations using Siemens S+ products face significant risk as the vulnerability enables attackers to gain unauthorized administrative access to critical industrial databases that often contain sensitive operational data and control system configurations. The attack surface is particularly concerning for industrial environments where database integrity and access controls are paramount to maintaining operational security and preventing unauthorized modifications to critical processes.
Mitigation strategies should focus on implementing robust authentication mechanisms including multi-factor authentication, regular privilege reviews, and strict access control policies within the S+ database environment. Network segmentation and monitoring of database access patterns can help detect anomalous behavior indicative of privilege escalation attempts. Regular security updates from Siemens should be implemented immediately upon availability, as these vulnerabilities are typically addressed through firmware and software patches. Additionally, organizations should conduct comprehensive security assessments of their industrial control systems to identify similar privilege escalation vulnerabilities across related components and implement principle of least privilege approaches to minimize potential impact if such vulnerabilities are exploited in the future.