CVE-2025-10151 in smartLink HW-PN
Summary
by MITRE • 10/28/2025
Improper locking vulnerability in Softing Industrial Automation GmbH gateways allows infected memory and/or resource leak exposure.This issue affects
smartLink HW-PN: from 1.02 through 1.03
smartLink HW-DP: 1.31
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Analysis
by VulDB Data Team • 10/28/2025
The vulnerability identified as CVE-2025-10151 represents a critical improper locking flaw within Softing Industrial Automation GmbH gateways that fundamentally compromises system integrity and resource management. This weakness specifically impacts the smartLink HW-PN series with firmware versions 1.02 through 1.03 and the smartLink HW-DP series at version 1.31, creating potential attack vectors that could lead to unauthorized access and system instability. The improper locking mechanism allows malicious actors to exploit concurrent access patterns that should be properly synchronized, potentially leading to memory corruption and resource exhaustion scenarios.
The technical implementation of this vulnerability stems from inadequate mutex or semaphore handling within the gateway's core processing routines. When multiple threads or processes attempt to access shared resources simultaneously without proper synchronization mechanisms, the system becomes susceptible to race conditions that can result in memory leaks, buffer overflows, or resource exhaustion. This flaw falls under CWE-362 which specifically addresses race conditions in concurrent programming environments where proper locking mechanisms are not implemented or maintained correctly. The vulnerability creates a scenario where attackers can manipulate the timing of resource access to cause system instability or information disclosure.
Operationally, this vulnerability poses significant risks to industrial automation environments where these gateways serve as critical communication bridges between field devices and control systems. The resource leak exposure could lead to gradual system degradation, potential denial of service conditions, or even complete system crashes that would disrupt production processes. In industrial control systems, such vulnerabilities can create cascading failures that extend beyond the immediate device to affect entire production lines or facility operations. The impact is particularly severe given that these are industrial gateways that typically operate in continuous, mission-critical environments where reliability and security are paramount.
The exploitation of this vulnerability could enable attackers to gain unauthorized access to sensitive operational data, potentially compromising the integrity of industrial control protocols and creating opportunities for more sophisticated attacks within the industrial network. From an ATT&CK framework perspective, this vulnerability aligns with techniques such as T1072 Application Deployment Software and T1496 Resource Hijacking, where attackers can leverage system resource exhaustion to maintain persistent access or disrupt operations. Organizations should implement immediate firmware updates to address this vulnerability, establish network segmentation to limit access to these critical devices, and monitor for unusual resource consumption patterns that might indicate exploitation attempts. Additionally, regular security assessments of industrial control systems should include evaluation of locking mechanisms and concurrent access controls to prevent similar vulnerabilities from emerging in other components of the operational technology infrastructure.