CVE-2025-7231 in VT-Designer
Summary
by MITRE • 07/21/2025
INVT VT-Designer PM3 File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of INVT VT-Designer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of PM3 files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25724.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 07/29/2025
The CVE-2025-7231 vulnerability represents a critical out-of-bounds write flaw in INVT VT-Designer software that enables remote code execution through PM3 file parsing. This vulnerability resides in the file handling mechanism of the VT-Designer application, specifically within the PM3 file parser where insufficient input validation allows attackers to manipulate memory structures. The flaw manifests when the application processes maliciously crafted PM3 files, leading to memory corruption that can be exploited to gain arbitrary code execution privileges. The vulnerability requires user interaction to be exploited, meaning victims must either visit a malicious webpage or open a specially crafted PM3 file, making it a targeted attack vector rather than an automated exploitation risk. The root cause of this issue aligns with CWE-787, which describes out-of-bounds write conditions where an application writes data past the end of a buffer or array, potentially overwriting adjacent memory locations.
The technical exploitation of this vulnerability involves manipulating the PM3 file format to trigger an out-of-bounds write condition during parsing operations. When the VT-Designer application processes a malformed PM3 file, it fails to properly validate the structure and content of the file, allowing an attacker to craft input that causes the parser to write data beyond allocated memory boundaries. This memory corruption can overwrite critical program variables, function pointers, or return addresses, enabling attackers to redirect execution flow and inject malicious code. The vulnerability operates at the application layer and can be classified under the ATT&CK technique T1059.007 for command and scripting interpreter, as successful exploitation would allow attackers to execute arbitrary commands within the context of the VT-Designer process. The attack surface is primarily limited to users who interact with PM3 files, either through direct file opening or web-based delivery mechanisms.
The operational impact of this vulnerability extends beyond simple code execution, as it can lead to complete system compromise when attackers leverage the elevated privileges of the VT-Designer application. Since the vulnerability allows execution in the context of the current process, attackers can potentially escalate privileges if the application runs with elevated permissions, or establish persistent backdoors for continued access. The remote code execution capability means that attackers can deploy malware, steal sensitive data, or establish command and control channels without requiring physical access to the target system. Organizations using VT-Designer for industrial control systems or process monitoring may face critical operational security risks, as attackers could potentially disrupt production processes or gain access to sensitive operational data. The vulnerability's classification as a remote code execution flaw places it within the high-risk category of cybersecurity threats, particularly in environments where industrial automation systems are connected to corporate networks.
Mitigation strategies for CVE-2025-7231 should focus on immediate patch management and operational security controls to prevent exploitation. Organizations should prioritize applying vendor patches as soon as they become available, as the vulnerability does not require complex attack vectors and can be exploited through simple file delivery mechanisms. Network segmentation and access controls should be implemented to limit user access to PM3 file handling capabilities, while web application firewalls can help detect and block malicious file delivery attempts. Input validation should be enhanced at multiple levels, including file format validation, size restrictions, and content sanitization to prevent malformed PM3 files from being processed. Security awareness training for users should emphasize the dangers of opening untrusted files and visiting suspicious websites, as user interaction remains a required component for exploitation. Additionally, monitoring systems should be configured to detect unusual file processing activities or memory allocation patterns that may indicate exploitation attempts, and regular vulnerability assessments should be conducted to identify similar issues in other industrial control system applications.