CVE-2025-52758 identifies a vulnerability in the Zippy product developed by Gesundheit Bewegt GmbH, specifically an unrestricted upload of files with dangerous types. This vulnerability exists in versions up to and including 1.7.0. The core issue is that Zippy does not properly validate or restrict the types of files users can upload, allowing attackers to upload malicious files such as web shells, scripts, or executables. Once uploaded, these files can be executed on the server, potentially leading to remote code execution, unauthorized access, data leakage, or full system compromise. The vulnerability was reserved in June 2025 and published in October 2025, but no CVSS score or patches have been released yet, and no active exploits have been reported. The lack of file type restrictions is a common and critical security flaw, especially in web applications handling user-generated content. Attackers can exploit this by crafting malicious payloads disguised as legitimate files, bypassing any superficial checks. The vulnerability impacts the confidentiality, integrity, and availability of systems running Zippy, as attackers could manipulate or destroy data, disrupt services, or pivot within the network. The absence of authentication requirements or user interaction details suggests that exploitation may be possible by any user with upload permissions, increasing the attack surface. Given the product's use case and the nature of the vulnerability, this represents a significant risk to organizations relying on Zippy for file management or content delivery.

For European organizations, this vulnerability could lead to severe consequences including unauthorized access to sensitive data, service disruption, and potential lateral movement within networks. Organizations in sectors such as healthcare, finance, and government that may use Zippy for file handling are particularly at risk due to the sensitive nature of their data. Exploitation could result in data breaches, regulatory non-compliance (e.g., GDPR violations), reputational damage, and financial losses. The ability to upload and execute malicious files could also facilitate ransomware deployment or persistent backdoors. Since no patches are currently available, organizations face an immediate risk window. The impact is amplified in environments where Zippy is integrated with other critical systems or exposed to the internet, increasing the likelihood of external attacks. The vulnerability also raises concerns about supply chain security if Zippy is embedded in third-party solutions used across Europe.

Until an official patch is released, European organizations should implement several practical mitigations: 1) Disable file upload functionality in Zippy if not essential. 2) Enforce strict file type validation on the server side, allowing only safe file extensions and MIME types. 3) Implement content scanning of uploaded files using antivirus and malware detection tools. 4) Restrict upload permissions to trusted and authenticated users only, applying the principle of least privilege. 5) Monitor logs and network traffic for unusual upload activity or execution of unexpected files. 6) Use web application firewalls (WAFs) to detect and block malicious upload attempts. 7) Isolate the Zippy application environment to limit potential damage from exploitation. 8) Prepare incident response plans specifically addressing file upload attacks. 9) Engage with Gesundheit Bewegt GmbH for timely updates and patches. 10) Conduct security awareness training for users on safe file handling practices.