CVE-2025-27645 is a critical security vulnerability affecting Vasion Print (formerly PrinterLogic) versions before Virtual Appliance Host 22.0.933 Application 20.0.2368. The core issue stems from the server-side trusting HTTP permission methods insecurely, which allows an attacker to install extensions without proper authorization checks (CWE-863: Incorrect Authorization). This insecure extension installation can be exploited remotely over the network without requiring any authentication or user interaction, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The vulnerability impacts confidentiality, integrity, and availability severely, as malicious extensions could execute arbitrary code, manipulate print jobs, exfiltrate sensitive data, or disrupt printing services. Although no known exploits have been reported in the wild yet, the high CVSS score of 9.8 reflects the critical nature and ease of exploitation. The vulnerability affects enterprise print management environments where Vasion Print is deployed, which are often integrated into broader IT infrastructure, increasing the potential attack surface. The lack of available patches at the time of disclosure necessitates immediate risk mitigation through network segmentation, access control, and monitoring until official updates are released.

For European organizations, this vulnerability poses a significant threat due to the widespread use of centralized print management solutions like Vasion Print in enterprise and government environments. Exploitation could lead to unauthorized code execution within critical infrastructure, data leakage through compromised print jobs, and denial of print services impacting business operations. The ability to install malicious extensions without authentication means attackers can gain persistent footholds and potentially pivot to other internal systems. This is particularly concerning for sectors handling sensitive data such as finance, healthcare, and public administration. Disruption of print services can also affect operational workflows, causing productivity losses. The vulnerability's network-exploitable nature increases the risk of large-scale attacks, especially in organizations with insufficient network segmentation or exposed print management interfaces.

Until official patches are released, European organizations should implement strict network segmentation to isolate print management servers from general user networks and the internet. Access to Vasion Print management interfaces should be restricted using firewalls and VPNs, allowing only trusted administrators. Monitor network traffic for unusual HTTP permission method requests indicative of exploitation attempts. Employ application-layer firewalls or web application firewalls (WAFs) to block unauthorized extension installation requests. Conduct thorough audits of installed extensions and remove any unrecognized or suspicious ones. Implement strict logging and alerting on print management activities to detect anomalies early. Once patches become available, prioritize immediate deployment across all affected systems. Additionally, review and harden server-side authorization mechanisms to prevent similar insecure permission handling in the future.