CVE-2025-55910 is a vulnerability identified in CMSEasy version 7.7.8.0 and earlier, specifically involving an arbitrary file deletion flaw within the database_admin.php component. CMSEasy is a content management system widely used for website management. The vulnerability allows an attacker to delete arbitrary files on the server by exploiting insufficient input validation or improper access controls in the database administration script. This can lead to the removal of critical files, potentially disrupting website functionality, corrupting data, or enabling further exploitation such as privilege escalation or denial of service. The lack of a CVSS score and absence of known exploits in the wild suggest this vulnerability is newly disclosed and may not yet be actively exploited. However, the arbitrary file deletion capability inherently poses a significant risk as it can compromise both the integrity and availability of affected systems. The vulnerability does not specify if authentication or user interaction is required, but given it resides in an administrative script, it may require some level of access or could be exploitable remotely if the script is exposed. No patches or mitigation links are currently provided, indicating organizations must proactively assess their exposure and implement compensating controls.

For European organizations using CMSEasy, this vulnerability could have serious consequences. Arbitrary file deletion can disrupt business-critical websites and services, leading to downtime and loss of customer trust. It may also result in data loss or corruption, impacting data integrity and compliance with regulations such as GDPR. Organizations in sectors relying heavily on web presence, including e-commerce, media, and government services, could face operational interruptions. Additionally, if exploited by threat actors, it could serve as a foothold for further attacks, including ransomware or data breaches. The impact is heightened in Europe due to stringent data protection laws and the reputational damage associated with service outages or data loss. The absence of known exploits currently provides a window for mitigation before active exploitation occurs.

Given the lack of an official patch, European organizations should immediately audit their CMSEasy installations to identify affected versions (7.7.8.0 and earlier). Restrict access to the database_admin.php script by implementing strict access controls such as IP whitelisting, VPN-only access, or multi-factor authentication to limit exposure. Employ web application firewalls (WAFs) with rules designed to detect and block suspicious file deletion attempts targeting this script. Regularly back up website files and databases to enable rapid recovery in case of file deletion. Monitor logs for unusual activity related to file operations or access to administrative scripts. If possible, isolate the CMS environment from other critical systems to contain potential damage. Engage with CMSEasy vendors or community forums to track patch releases and apply updates promptly once available. Finally, conduct security awareness training for administrators to recognize and report suspicious behavior.