CVE-2026-25512 Scanner
CVE-2026-25512 Scanner - Remote Code Execution vulnerability in Group-Office
Short Info
Level
Single Scan
Single Scan
Can be used by
Asset Owner
Estimated Time
10 seconds
Time Interval
13 days 15 hours
Scan only one
Domain, Subdomain, IPv4
Toolbox
Group-Office is a comprehensive groupware application designed primarily for enterprises, making it ideal for business communication and project management. It is widely implemented by organizations to streamline internal communications and efficiently manage emails, documents, projects, and customer relationships. With functionality that includes email, document, and calendar management, Group-Office can be used by teams for collaboration and task organization. The software is particularly beneficial for remote teams who require coordinated access to resources and data from diverse locations. By providing an all-in-one solution for enterprise tasks, organizations can reduce fragmentation and enhance productivity. The software's modular architecture allows users to customize it based on specific project requirements, enhancing its adaptive utility.
The vulnerability in Group-Office is a critical remote code execution (RCE) flaw. It stems from an OS command injection vulnerability, allowing attackers to execute arbitrary system commands. This threat is particularly severe as it grants attackers potential control over the web server hosting Group-Office. The vulnerability is based on improper validation and escaping of user-controlled input, specifically in the 'tmp_file' parameter. Successful exploitation of this flaw allows malicious users to execute code with the same permissions as the Group-Office server. This makes it possible for intruders to potentially access, modify, or erase critical organizational data hosted on affected servers. Such compromise undermines both data integrity and confidentiality within corporate environments utilizing the software.
The vulnerability specifically targets the endpoint 'email/message/tnefAttachmentFromTempFile' in Group-Office systems. The root cause is the concatenation of a user-controlled 'tmp_file' parameter into an 'exec()' function call without proper sanitization. Attackers can inject shell metacharacters into the 'tmp_file' parameter, which allows them to execute arbitrary commands on the server. The injection allows for exploitation of system-level permissions, providing unauthorized access to internal resources. This means that an attacker with access to perform the operation can leverage it to execute potentially harmful commands on the underlying system. The exploit takes advantage of insufficient input validation mechanisms within the application, manipulating the exec() processing functionality.
When the vulnerability is successfully leveraged by an attacker, it can result in significant security compromises. The immediate threat includes unauthorized command execution, potentially leading to server manipulation or destruction. As control is gained over the server, attackers could exfiltrate sensitive data, including proprietary business communications and user information. Long-term effects might include persistent backdoor access, enabling further malicious activities. Such access could facilitate data breaches or allow attackers to disrupt organizational operations through denial-of-service tactics. Consequently, the integrity and confidentiality of organizational data would be severely compromised.
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