CVE-2025-7971 in Studio 5000 Logix Designer
Summary
by MITRE • 08/14/2025
A security issues exists within Studio 5000 Logix Designer due to unsafe handling of environment variables. If the specified path lacks a valid file, Logix Designer crashes; However, it may be possible to execute malicious code without triggering a crash.
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Analysis
by VulDB Data Team • 08/17/2025
The vulnerability identified as CVE-2025-7971 represents a critical security flaw within Studio 5000 Logix Designer, a widely used industrial automation software developed by Rockwell Automation. This issue stems from improper handling of environment variables during file path processing, creating a potential code execution vector that could compromise industrial control systems. The vulnerability specifically manifests when the software processes environment variables that reference file paths, where the application fails to properly validate or sanitize these inputs before attempting file operations.
The technical implementation of this flaw involves the software's failure to properly validate environment variable contents when constructing file paths for processing. When a maliciously crafted environment variable references a non-existent file path, the application typically crashes due to unhandled exceptions. However, the vulnerability extends beyond simple crash conditions, as attackers can potentially manipulate the environment variable handling to execute arbitrary code without necessarily causing an application crash. This behavior aligns with CWE-174, which describes the weakness of insufficient input validation leading to code execution vulnerabilities in industrial control systems. The flaw essentially allows attackers to inject malicious code through environment variables that are then processed by the application's file handling mechanisms.
The operational impact of this vulnerability within industrial environments is significant, as Studio 5000 Logix Designer is commonly used for programming and configuring programmable logic controllers in manufacturing and process control systems. Attackers who successfully exploit this vulnerability could potentially gain unauthorized access to industrial control systems, manipulate programmable logic controllers, or execute malicious code on systems that control critical infrastructure. The vulnerability could be particularly dangerous in environments where industrial control systems are not properly segmented from corporate networks, as it could provide a pathway for lateral movement and persistent access. This aligns with ATT&CK technique T1059.001, which covers command and scripting interpreter usage, and T1566.001, which involves spearphishing attachments that could leverage this vulnerability to establish initial access.
Mitigation strategies for CVE-2025-7971 should focus on both immediate defensive measures and long-term architectural improvements. Organizations should implement strict environment variable validation and sanitization protocols within the application's file handling processes, ensuring that all environment variables are properly validated before any file operations are performed. Network segmentation and access controls should be strengthened to limit exposure of industrial control systems to potentially compromised environments. Additionally, regular security updates from Rockwell Automation should be applied immediately upon availability, as the vendor is likely to provide patches addressing the unsafe environment variable handling. System administrators should also implement monitoring for suspicious environment variable usage patterns and conduct regular security assessments of industrial control system environments to identify potential exploitation attempts. The vulnerability demonstrates the importance of secure coding practices in industrial automation environments where traditional security controls may be insufficient to prevent exploitation of low-level system vulnerabilities.