CVE-2025-46295 is a critical vulnerability found in Claris FileMaker Server that stems from the use of Apache Commons Text library versions prior to 1.10.0. The vulnerability is due to unsafe interpolation features within the text-substitution API, which allow attackers to inject malicious input that triggers interpolators capable of executing arbitrary system commands or accessing external resources. This can lead to remote code execution (RCE) without requiring authentication or user interaction, making it highly dangerous. The root cause lies in the way the Apache Commons Text library processes untrusted input during string interpolation, which was not sufficiently sanitized or restricted. FileMaker Server versions prior to 22.0.4 include this vulnerable library, exposing them to potential exploitation. Although no public exploits have been reported yet, the vulnerability’s nature and the widespread use of FileMaker Server in enterprise environments make it a significant threat. The vulnerability was publicly disclosed in December 2025, with the vendor providing a patched version (22.0.4) that updates the Apache Commons Text library to a secure version. Organizations using affected versions should prioritize upgrading to the patched release and review their input handling practices to prevent injection of malicious data into the interpolation API.

For European organizations, the impact of CVE-2025-46295 can be severe. Successful exploitation could lead to full remote compromise of FileMaker Server instances, allowing attackers to execute arbitrary commands, access sensitive data, or pivot within the network. This threatens confidentiality, integrity, and availability of critical business data managed by FileMaker Server. Industries relying on FileMaker Server for database management, including finance, healthcare, manufacturing, and public sector entities, may face data breaches, operational disruption, and regulatory non-compliance. The lack of authentication requirements and ease of exploitation increase the risk of widespread attacks, especially on internet-facing servers. Additionally, the ability to execute commands remotely could facilitate ransomware deployment or espionage activities. The vulnerability could also undermine trust in digital services and lead to significant financial and reputational damage. Given the critical nature of this flaw, European organizations must act swiftly to mitigate exposure and protect their infrastructure.

1. Immediately upgrade Claris FileMaker Server to version 22.0.4 or later, which contains the patched Apache Commons Text library version 1.10.0 or above. 2. Implement strict input validation and sanitization to ensure untrusted data is never passed directly into text interpolation APIs. 3. Restrict network exposure of FileMaker Server instances by limiting access to trusted internal networks or VPNs and applying firewall rules to block unauthorized inbound traffic. 4. Monitor server logs for unusual command execution attempts or unexpected external resource access patterns. 5. Employ application-layer security controls such as Web Application Firewalls (WAFs) configured to detect and block injection attempts targeting interpolation features. 6. Conduct regular security audits and penetration testing focused on injection vulnerabilities and third-party library usage. 7. Educate developers and administrators about secure coding practices related to string interpolation and third-party dependencies. 8. Maintain an up-to-date inventory of software components to quickly identify and remediate vulnerable versions.