CVE-2026-25108 in FileZen
Summary
by MITRE • 02/13/2026
FileZen contains an OS command injection vulnerability. When FileZen Antivirus Check Option is enabled, a logged-in user may send a specially crafted HTTP request to execute an arbitrary OS command.
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Analysis
by VulDB Data Team • 02/26/2026
The vulnerability identified as CVE-2026-25108 represents a critical operating system command injection flaw within the FileZen application ecosystem. This security weakness specifically manifests when the Antivirus Check Option feature is activated, creating an attack vector that allows authenticated users to manipulate system commands through crafted HTTP requests. The flaw resides in the application's insufficient input validation mechanisms that fail to properly sanitize user-supplied data before incorporating it into system execution contexts. This type of vulnerability falls under the Common Weakness Enumeration category CWE-77, which specifically addresses improper neutralization of special elements used in operating system commands, making it a well-documented and dangerous class of security flaw.
The technical implementation of this vulnerability enables a logged-in user to escalate their privileges and execute arbitrary operating system commands on the affected system. When the antivirus check option is enabled, the application processes user input without adequate sanitization, allowing malicious payloads to be interpreted as legitimate system commands. Attackers can leverage this weakness to gain unauthorized access to system resources, potentially leading to complete system compromise. The vulnerability is particularly concerning because it requires only authentication to exploit, meaning that any user with valid login credentials can potentially leverage this flaw to execute malicious commands. This represents a privilege escalation issue where user-level access can be transformed into system-level command execution capabilities, aligning with ATT&CK technique T1059.001 for command and script interpreter.
The operational impact of CVE-2026-25108 extends beyond simple command execution, as it can facilitate broader security breaches within environments where FileZen is deployed. An attacker could potentially use this vulnerability to install backdoors, exfiltrate sensitive data, modify system configurations, or establish persistent access to compromised systems. The vulnerability affects organizations that rely on FileZen for file management and security operations, particularly those with less restrictive user access controls. The attack surface is significantly expanded when considering that the vulnerability is triggered through normal application functionality, making detection more challenging. Security teams may not immediately recognize the compromise as originating from legitimate antivirus scanning operations, allowing the attack to remain undetected for extended periods. Organizations using FileZen in production environments face potential data loss, system corruption, and regulatory compliance violations if this vulnerability is exploited.
Mitigation strategies for CVE-2026-25108 should focus on immediate patching of the FileZen application to address the command injection vulnerability. Until patches are available, organizations should implement network segmentation to limit access to FileZen systems, enforce strict access controls, and monitor for unusual command execution patterns in system logs. The implementation of web application firewalls and input validation mechanisms can provide additional layers of protection. Security teams should also conduct thorough vulnerability assessments to identify any potential exploitation attempts and establish monitoring procedures for suspicious HTTP requests containing command injection patterns. According to ATT&CK framework guidance, organizations should implement defensive measures such as restricting command execution permissions and implementing principle of least privilege access controls. Regular security audits and penetration testing should be conducted to ensure that the vulnerability has been properly remediated and that no other similar weaknesses exist within the FileZen deployment environment.