CVE-2026-22923 in Siemens
Summary
by MITRE • 02/10/2026
A vulnerability has been identified in NX (All versions < V2512), NX (Managed Mode) (All versions < V2512). The affected application contains a data validation vulnerability that could allow an attacker with local access to interfere with internal data during the PDF export process that could potentially lead to arbitrary code execution.
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Analysis
by VulDB Data Team • 03/11/2026
This vulnerability exists within the NX software platform across both standard and managed modes, affecting all versions prior to V2512. The issue stems from inadequate data validation mechanisms during the PDF export functionality, creating a critical security gap that can be exploited by attackers with local system access. The flaw specifically manifests during the document processing phase when internal data structures are manipulated, potentially allowing malicious actors to inject unauthorized code sequences that could execute with the privileges of the running application.
The technical implementation of this vulnerability falls under CWE-20, which describes "Improper Input Validation" as the underlying weakness. When the NX application processes documents for PDF export, it fails to properly validate or sanitize the input data before incorporating it into internal processing pipelines. This validation gap creates opportunities for attackers to manipulate the data flow in ways that could bypass normal execution boundaries. The local access requirement means that an attacker must already have system-level privileges or physical access to the target machine, but once achieved, the vulnerability could enable privilege escalation or code execution within the application context.
From an operational perspective, this vulnerability represents a significant risk to organizations relying on NX for document processing and management. The potential for arbitrary code execution creates multiple attack vectors including privilege escalation, data exfiltration, and system compromise. Attackers could leverage this flaw to install backdoors, modify critical system files, or establish persistent access to the compromised system. The impact extends beyond individual machine compromise as the NX platform typically handles sensitive business documents, making this vulnerability particularly dangerous for enterprise environments.
The attack surface for this vulnerability aligns with ATT&CK technique T1059.001, which covers "Command and Scripting Interpreter: PowerShell", as attackers could potentially use the arbitrary code execution capability to deploy PowerShell-based payloads. Additionally, the vulnerability maps to ATT&CK technique T1068, "Exploitation for Privilege Escalation", since successful exploitation could allow attackers to elevate their privileges within the system. Organizations should consider implementing process monitoring and anomaly detection to identify potential exploitation attempts, particularly during PDF export operations.
Mitigation strategies should prioritize immediate patch deployment to versions V2512 or later, which contain the necessary data validation improvements. System administrators should also implement least privilege access controls to limit local system access and monitor PDF export operations for unusual patterns. Network segmentation and endpoint protection solutions can provide additional layers of defense by detecting and blocking malicious code execution attempts. Regular security assessments should verify that no unauthorized modifications exist in the NX installation directories and that proper access controls remain in place to prevent unauthorized local system access.