CVE-2024-11790 is a stack-based buffer overflow vulnerability identified in Fuji Electric Monitouch V-SFT version 6.2.3.0, specifically within the parsing logic of V10 files. The vulnerability stems from inadequate validation of the length of user-supplied data before copying it into a fixed-size stack buffer. This flaw allows an attacker to overflow the buffer, overwriting adjacent memory and enabling arbitrary code execution within the context of the Monitouch V-SFT process. Exploitation requires user interaction, such as opening a maliciously crafted V10 file or visiting a malicious webpage that triggers the vulnerable parsing routine. The vulnerability is classified under CWE-121, indicating a classic stack-based buffer overflow. The CVSS v3.0 score is 7.8 (high), reflecting the potential for remote code execution without privileges but requiring user interaction. While no public exploits have been reported, the vulnerability presents a critical risk to industrial control systems relying on Monitouch V-SFT for human-machine interface (HMI) operations. The flaw could be leveraged to disrupt industrial processes, steal sensitive operational data, or pivot within a network. The vulnerability was reported by the Zero Day Initiative (ZDI) as ZDI-CAN-24449 and published on November 27, 2024.

The vulnerability allows remote attackers to execute arbitrary code with the privileges of the Monitouch V-SFT application, potentially leading to full compromise of the affected system. This can result in unauthorized control over industrial processes, data theft, manipulation of operational parameters, or denial of service. Given that Monitouch V-SFT is used in industrial automation environments, exploitation could disrupt critical infrastructure, manufacturing lines, or energy management systems. The requirement for user interaction limits mass exploitation but targeted attacks against industrial operators are plausible. The compromise of such systems could have cascading effects on supply chains, safety mechanisms, and operational continuity. Confidentiality, integrity, and availability of industrial control systems are all at significant risk, which could lead to economic losses, safety hazards, and reputational damage for affected organizations.

1. Apply patches or updates from Fuji Electric as soon as they become available to address this vulnerability. 2. Until patches are released, restrict the sources of V10 files to trusted and verified origins only. 3. Implement strict network segmentation to isolate industrial control systems running Monitouch V-SFT from general IT networks and the internet. 4. Employ application whitelisting and endpoint protection solutions capable of detecting anomalous behavior related to buffer overflow exploitation. 5. Educate users on the risks of opening files from untrusted sources and visiting suspicious websites, emphasizing the need for caution with V10 files. 6. Monitor network traffic and system logs for unusual activity indicative of exploitation attempts, such as unexpected process behavior or crashes. 7. Consider deploying intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics for buffer overflow attempts targeting Monitouch V-SFT. 8. Conduct regular security assessments and penetration testing focused on industrial control systems to identify and remediate vulnerabilities proactively.