CVE-2024-55511
📋 TL;DR
A null pointer dereference vulnerability in Macrium Reflect backup software allows local attackers to crash systems or potentially gain elevated privileges by executing malicious code. This affects all users running Macrium Reflect versions before 8.1.8017 on Windows systems.
💻 Affected Systems
- Macrium Reflect
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Local privilege escalation leading to full system compromise, data theft, or persistent backdoor installation
Likely Case
System crash (BSOD) causing service disruption and potential data loss from interrupted operations
If Mitigated
Limited to denial of service if privilege escalation fails, with system recovery required
🎯 Exploit Status
Proof-of-concept code is publicly available on GitHub, requiring local execution with some user interaction
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.1.8017
Vendor Advisory: https://updates.macrium.com/reflect/v8/v8.1.8017/details8.1.8017.htm
Restart Required: No
Instructions:
1. Open Macrium Reflect. 2. Navigate to Help > Check for Updates. 3. Follow prompts to download and install version 8.1.8017 or later. 4. Verify installation completes successfully.
🔧 Temporary Workarounds
Restrict local execution permissions
WindowsLimit which users can execute programs on affected systems to reduce attack surface
🧯 If You Can't Patch
- Implement strict application whitelisting to prevent unauthorized executables
- Segment networks to limit lateral movement from compromised workstations
🔍 How to Verify
Check if Vulnerable:
Check Macrium Reflect version in Help > About; if version is below 8.1.8017, system is vulnerableCheck Version:
wmic product where name="Macrium Reflect" get versionVerify Fix Applied:
Confirm version shows 8.1.8017 or higher in Help > About dialog📡 Detection & Monitoring
Log Indicators:
- Application crashes of Macrium Reflect service
- Unexpected process creation from Macrium Reflect binaries
- Windows Event ID 1000 application errors
Network Indicators:
- None - local exploitation only
SIEM Query:
source="Windows Security" EventID=4688 ProcessName="*reflect*" OR source="Application" EventID=1000 ApplicationName="*reflect*"