A critical security vulnerability, identified as CVE-2025-30387, has been discovered in Microsoft's Document Intelligence Studio On-Prem. This flaw allows unauthorized attackers to elevate their privileges over a network by exploiting improper path traversal mechanisms within the application.
Understanding the Vulnerability
CVE-2025-30387 arises from an improper limitation of a pathname to a restricted directory, commonly known as a 'path traversal' vulnerability. In this scenario, the application fails to adequately sanitize user-supplied input, enabling attackers to navigate beyond the intended directory structure. By crafting malicious requests, an attacker can access or modify files and directories that should be restricted, potentially leading to unauthorized privilege escalation.
Technical Details
While specific technical details of CVE-2025-30387 have not been publicly disclosed to prevent exploitation, it is understood that the vulnerability exists due to inadequate input validation in the handling of file paths within Document Intelligence Studio On-Prem. This flaw can be exploited remotely, allowing attackers to execute arbitrary code or commands with elevated privileges.
Potential Impact
The exploitation of this vulnerability poses significant risks, including:
- Unauthorized Access: Attackers can gain access to sensitive files and data.
- Privilege Escalation: Malicious actors may obtain higher-level permissions, compromising system integrity.
- Data Manipulation: The ability to modify or delete critical data can disrupt operations and lead to data loss.
To protect systems against CVE-2025-30387, it is recommended to:
- Apply Security Updates: Ensure that all patches and updates provided by Microsoft are promptly applied to mitigate known vulnerabilities.
- Implement Input Validation: Strengthen input validation mechanisms to prevent path traversal attacks.
- Restrict Permissions: Limit user permissions to the minimum necessary to reduce the potential impact of an exploit.
- Monitor Systems: Regularly audit and monitor systems for unusual activity that may indicate exploitation attempts.
CVE-2025-30387 highlights the critical importance of robust input validation and strict access controls in software applications. Organizations utilizing Document Intelligence Studio On-Prem should take immediate action to apply security updates and review their security practices to prevent potential exploitation.
Source: MSRC Security Update Guide - Microsoft Security Response Center
