CVE-2025-7114 is a vulnerability identified in the SimStudioAI sim product, specifically affecting the POST function within the file apps/sim/app/api/files/upload/route.ts, which is part of the Session Handler component. The vulnerability arises due to missing authentication checks when handling the Request argument, allowing an attacker to bypass authentication controls entirely. This flaw enables remote attackers to exploit the system without any prior authentication or user interaction, making it a significant security concern. The vulnerability has been publicly disclosed, and although the vendor was notified early, no response or patch has been provided to date. The CVSS 4.0 base score is 6.9, categorized as medium severity, reflecting the ease of exploitation (network attack vector, no privileges required, no user interaction) but with limited impact on confidentiality, integrity, and availability (low to medium impact). The vulnerability could allow unauthorized file uploads or manipulation of session-related data, potentially leading to unauthorized access or further exploitation within the affected environment. The absence of authentication in a critical API endpoint handling file uploads is particularly dangerous as it could be leveraged to inject malicious files, disrupt session management, or escalate privileges depending on the backend processing of uploaded content.

For European organizations using SimStudioAI sim, this vulnerability poses a risk of unauthorized access to internal systems or data through unauthenticated remote exploitation. The ability to upload files without authentication could lead to malware deployment, data exfiltration, or disruption of services. Organizations in sectors relying on SimStudioAI sim for simulation or AI-driven processes—such as manufacturing, automotive, aerospace, or research institutions—may face operational disruptions or intellectual property theft. The lack of vendor response and patch availability increases exposure time, raising the risk of exploitation by threat actors. Additionally, compliance with European data protection regulations (e.g., GDPR) could be jeopardized if personal or sensitive data is compromised due to this vulnerability. The medium severity rating suggests that while the impact is not catastrophic, the ease of exploitation and unauthenticated access make it a priority for remediation to prevent potential lateral movement or further attacks within corporate networks.

Given the absence of an official patch, European organizations should implement compensating controls immediately. These include restricting network access to the vulnerable API endpoint via firewall rules or network segmentation, ensuring that only trusted internal systems or users can reach the upload route. Deploying a Web Application Firewall (WAF) with custom rules to detect and block anomalous or unauthorized POST requests to the affected endpoint can reduce risk. Monitoring and logging all access attempts to the upload API should be enhanced to detect potential exploitation attempts early. Organizations should also conduct thorough audits of existing uploaded files for signs of malicious content and review session management practices for additional weaknesses. If possible, disabling or temporarily removing the vulnerable upload functionality until a vendor patch is released is advisable. Finally, organizations should maintain close communication with SimStudioAI for updates and consider applying virtual patching techniques or sandboxing the affected component to limit impact.