CVE-2025-7427
📋 TL;DR
Arm Development Studio versions before 2025 contain a DLL hijacking vulnerability (CWE-427) where attackers can place malicious DLLs in directories searched by the application. This allows local arbitrary code execution with the privileges of the user running Arm Development Studio. Only users of affected Arm Development Studio versions are impacted.
💻 Affected Systems
- Arm Development Studio
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise if exploited by a privileged user, leading to data theft, persistence, or lateral movement.
Likely Case
Local privilege escalation or code execution in user context, potentially allowing access to sensitive development files.
If Mitigated
Limited impact if users run with minimal privileges and application is isolated.
🎯 Exploit Status
DLL hijacking is a well-known attack technique requiring local access or social engineering to place malicious DLLs.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Arm Development Studio 2025 or later
Vendor Advisory: https://developer.arm.com/documentation/110691
Restart Required: Yes
Instructions:
1. Download Arm Development Studio 2025 or later from Arm's official website. 2. Uninstall the vulnerable version. 3. Install the updated version. 4. Restart the system.
🔧 Temporary Workarounds
Restrict DLL search paths
allUse application control policies to restrict where Arm Development Studio can load DLLs from.
Windows: Use AppLocker or Windows Defender Application Control to create DLL rules
Linux: Use SELinux/AppArmor to restrict library paths
Run with minimal privileges
allExecute Arm Development Studio with standard user privileges, not administrative rights.
🧯 If You Can't Patch
- Remove execute permissions for non-admin users on Arm Development Studio
- Monitor for suspicious DLL loads from unusual directories using endpoint detection
🔍 How to Verify
Check if Vulnerable:
Check Arm Development Studio version - if earlier than 2025, it is vulnerable.Check Version:
Windows: Check program version in Control Panel or About dialog. Linux: Check installation directory or package manager.Verify Fix Applied:
Confirm Arm Development Studio version is 2025 or later and test DLL loading from insecure paths.📡 Detection & Monitoring
Log Indicators:
- DLL loads from unusual directories (e.g., user temp folders, network shares)
- Process creation events from Arm Development Studio with suspicious parent processes
Network Indicators:
- Unusual outbound connections from Arm Development Studio process
SIEM Query:
Process creation where parent process contains 'armds' AND (image loaded from path contains 'temp' OR image loaded from path contains 'downloads')