CVE-2025-46616 Overview
CVE-2025-46616 is a critical arbitrary file upload vulnerability affecting Quantum StorNext Web GUI API before version 7.2.4. This vulnerability enables potential Arbitrary Remote Code Execution (RCE) through the upload of a malicious file. The flaw affects multiple Quantum storage products including StorNext RYO, StorNext Xcellis Workflow Director, and ActiveScale Cold Storage deployments.
Critical Impact
Attackers with low-level authentication can exploit this file upload vulnerability to achieve arbitrary remote code execution with the potential to fully compromise affected storage systems and propagate to connected infrastructure.
Affected Products
- Quantum StorNext RYO before version 7.2.4
- Quantum StorNext Xcellis Workflow Director before version 7.2.4
- Quantum ActiveScale Cold Storage
Discovery Timeline
- 2025-04-25 - CVE-2025-46616 published to NVD
- 2025-04-29 - Last updated in NVD database
Technical Details for CVE-2025-46616
Vulnerability Analysis
This vulnerability is classified under CWE-434 (Unrestricted Upload of File with Dangerous Type), a well-known weakness category that allows attackers to upload and execute malicious files on a target server. The Quantum StorNext Web GUI API fails to properly validate or restrict file uploads, allowing authenticated users to upload files containing executable code.
The attack can be conducted remotely over the network and requires only low-privilege authentication. No user interaction is required to exploit this vulnerability. Critically, the vulnerability has a changed scope, meaning successful exploitation can affect resources beyond the vulnerable component itself, potentially impacting other systems connected to the storage infrastructure.
Root Cause
The root cause of CVE-2025-46616 lies in inadequate file upload validation within the Quantum StorNext Web GUI API. The API fails to properly sanitize uploaded files, verify file types, or restrict the locations where uploaded files can be placed. This allows an attacker to upload files with dangerous extensions (such as executable scripts or web shells) that can subsequently be executed on the server.
Attack Vector
The attack vector for this vulnerability involves the following sequence:
- An attacker authenticates to the StorNext Web GUI API with low-privilege credentials
- The attacker crafts a malicious file containing executable code (such as a web shell or reverse shell payload)
- The malicious file is uploaded through the vulnerable API endpoint
- The uploaded file is placed in a location where it can be accessed and executed
- The attacker triggers execution of the uploaded file, gaining remote code execution on the target system
Due to the changed scope characteristic of this vulnerability, successful exploitation may allow the attacker to pivot to other systems or access resources beyond the initially compromised StorNext component.
Detection Methods for CVE-2025-46616
Indicators of Compromise
- Unexpected files with executable extensions appearing in web-accessible directories on StorNext systems
- Unusual file upload activity through the StorNext Web GUI API, particularly large or encoded files
- Web shell signatures or suspicious PHP/Python/Perl scripts in StorNext application directories
- Unexpected outbound connections from StorNext servers to external IP addresses
Detection Strategies
- Monitor StorNext Web GUI API logs for unusual file upload patterns or attempts to upload executable file types
- Implement file integrity monitoring on StorNext server directories to detect unauthorized file modifications
- Deploy network intrusion detection signatures for common web shell and RCE payload patterns
- Review authentication logs for unusual login patterns followed by file upload activity
Monitoring Recommendations
- Enable verbose logging on Quantum StorNext Web GUI API endpoints to capture all file upload attempts
- Configure SIEM alerts for file upload events combined with subsequent process execution on StorNext servers
- Implement network segmentation monitoring to detect lateral movement from compromised StorNext systems
- Regularly audit user accounts with API access to StorNext Web GUI for unauthorized or excessive privileges
How to Mitigate CVE-2025-46616
Immediate Actions Required
- Upgrade all affected Quantum StorNext products to version 7.2.4 or later immediately
- Restrict network access to the StorNext Web GUI API to trusted IP addresses and networks only
- Review and remove any unnecessary user accounts with API access to StorNext systems
- Scan StorNext servers for indicators of compromise including suspicious files and unauthorized processes
Patch Information
Quantum has released version 7.2.4 to address this vulnerability. Organizations should apply this update to all affected products including StorNext RYO, StorNext Xcellis Workflow Director, and ActiveScale Cold Storage deployments. Detailed patch information is available in the Quantum Security Bulletin.
Workarounds
- Implement strict network segmentation to limit access to StorNext Web GUI API from untrusted networks
- Configure web application firewall rules to block file upload requests containing dangerous file types or extensions
- Disable the StorNext Web GUI API entirely if not required for operations until patching is complete
- Implement additional authentication controls such as multi-factor authentication for API access
# Network restriction example - limit API access to management network
# Add firewall rules to restrict StorNext GUI access
iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
