CVE-2025-21101
📋 TL;DR
Dell Display Manager versions before 2.3.2.20 contain a race condition vulnerability that allows a local malicious user to delete arbitrary files or folders during installation. This affects users running vulnerable versions of the software on their systems.
💻 Affected Systems
- Dell Display Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Critical system files could be deleted, causing system instability, data loss, or complete system failure.
Likely Case
Local user could delete user data, configuration files, or application files, disrupting normal operations.
If Mitigated
With proper access controls and monitoring, impact would be limited to non-critical files accessible to the user.
🎯 Exploit Status
Requires local access and precise timing during installation. Race conditions are typically challenging to exploit reliably.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.3.2.20
Vendor Advisory: https://www.dell.com/support/kbdoc/en-us/000267927/dsa-2025-033
Restart Required: Yes
Instructions:
1. Download Dell Display Manager version 2.3.2.20 or later from Dell's official website. 2. Uninstall any previous versions. 3. Install the updated version. 4. Restart the system.
🔧 Temporary Workarounds
Restrict installation privileges
windowsLimit who can install software on affected systems
Monitor installation processes
windowsImplement monitoring for Dell Display Manager installation events
🧯 If You Can't Patch
- Restrict local user access to systems with vulnerable software
- Implement strict change control for software installations
🔍 How to Verify
Check if Vulnerable:
Check Dell Display Manager version in Control Panel > Programs and FeaturesCheck Version:
wmic product where "name like 'Dell Display Manager%'" get versionVerify Fix Applied:
Verify version is 2.3.2.20 or later in installed programs list📡 Detection & Monitoring
Log Indicators:
- Multiple file deletion events during Dell Display Manager installation
- Unexpected process termination during installation
Network Indicators:
- No network indicators - this is a local vulnerability
SIEM Query:
EventID=4663 AND ProcessName="*Dell Display Manager*" AND AccessMask="0x10000" (DELETE)