CVE-2024-11795 is a stack-based buffer overflow vulnerability identified in Fuji Electric Monitouch V-SFT version 6.2.3.0, a human-machine interface (HMI) software used in industrial control systems. The flaw exists in the parsing logic of V8 files, where the software fails to properly validate the length of user-supplied data before copying it into a fixed-size stack buffer. This lack of bounds checking allows an attacker to overflow the buffer, overwriting adjacent memory and enabling arbitrary code execution within the context of the Monitouch V-SFT process. The vulnerability requires user interaction, such as opening a maliciously crafted V8 file or visiting a malicious webpage that triggers the file parsing. The CVSS v3.0 score is 7.8, reflecting high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required. Although no public exploits have been reported yet, the vulnerability was assigned by the Zero Day Initiative (ZDI) as ZDI-CAN-24505, indicating active research and potential future exploitation. This vulnerability is particularly critical because Monitouch V-SFT is widely used in industrial environments where disruption or compromise can have severe operational consequences. The vulnerability could allow attackers to gain control over industrial processes, manipulate data, or cause denial of service conditions.

The impact of CVE-2024-11795 is significant for organizations using Fuji Electric Monitouch V-SFT in industrial control and automation environments. Successful exploitation can lead to remote code execution, allowing attackers to take full control of the affected system process. This can result in unauthorized access to sensitive operational data, manipulation of industrial processes, disruption of manufacturing or critical infrastructure operations, and potential safety hazards. The compromise of HMI software can cascade to other connected systems, amplifying the operational impact. Given the requirement for user interaction, social engineering or phishing campaigns could be used to deliver the malicious payload. The vulnerability threatens confidentiality, integrity, and availability simultaneously, making it a high-risk issue for sectors relying on industrial automation, including manufacturing, energy, utilities, and transportation.

1. Apply vendor patches immediately once Fuji Electric releases updates addressing CVE-2024-11795. Monitor official channels for patch availability. 2. Until patches are available, restrict the sources of V8 files to trusted and verified origins only. Implement strict file validation and scanning to detect malicious files. 3. Employ network segmentation to isolate industrial control systems running Monitouch V-SFT from general enterprise networks and the internet, reducing exposure to remote attacks. 4. Educate users and operators about the risks of opening unsolicited files or visiting untrusted websites to minimize user interaction exploitation vectors. 5. Use application whitelisting and endpoint protection solutions capable of detecting anomalous behavior or exploitation attempts targeting buffer overflows. 6. Monitor system logs and network traffic for signs of exploitation attempts or unusual activity related to Monitouch V-SFT. 7. Consider deploying intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics for buffer overflow attacks targeting industrial control software.