CVE-2024-55957
📋 TL;DR
This CVE describes a local privilege escalation vulnerability in Thermo Fisher Scientific Xcalibur and Foundation Instrument Control Software on Windows systems. Attackers with local access can exploit improper access control permissions to gain elevated privileges. Organizations using affected versions of these scientific instrument software packages are at risk.
💻 Affected Systems
- Thermo Fisher Scientific Xcalibur
- Thermo Foundation Instrument Control Software (ICSW)
⚠️ 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
An attacker with initial local access could gain SYSTEM/administrator privileges, potentially compromising the entire Windows system, installing malware, accessing sensitive instrument data, or pivoting to other systems.
Likely Case
Malicious insiders or attackers who gain initial foothold through other means could elevate privileges to bypass security controls, install persistence mechanisms, or access protected instrument configuration data.
If Mitigated
With proper access controls, least privilege principles, and network segmentation, impact is limited to the specific instrument control workstation rather than spreading to the broader network.
🎯 Exploit Status
Requires local access to the Windows system. Exploitation likely involves manipulating driver permissions or exploiting the improper access control mechanism.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Xcalibur 4.7 SP1 or later; Foundation ICSW 3.1 SP10 or later
Vendor Advisory: https://assets.thermofisher.com/TFS-Assets/CORP/Product-Guides/Thermo_Scientific_Xcalibur_and_Foundation.pdf
Restart Required: No
Instructions:
1. Download the latest service pack from Thermo Fisher's official website. 2. Install the update following vendor instructions. 3. Verify the installation completed successfully.
🔧 Temporary Workarounds
Restrict local access
allLimit physical and remote access to instrument control workstations to authorized personnel only.
Apply least privilege
allEnsure users operate with standard user accounts rather than administrative privileges on affected systems.
🧯 If You Can't Patch
- Isolate instrument control systems on separate network segments with strict access controls
- Implement application whitelisting to prevent unauthorized program execution
🔍 How to Verify
Check if Vulnerable:
Check installed version of Xcalibur or Foundation ICSW against affected version ranges. Review Windows system logs for unauthorized privilege escalation attempts.Check Version:
Check within the software's 'About' or 'Help' menu, or review installed programs in Windows Control Panel.Verify Fix Applied:
Verify that Xcalibur version is 4.7 SP1 or higher, or Foundation ICSW version is 3.1 SP10 or higher. Check that driver permissions have been corrected.📡 Detection & Monitoring
Log Indicators:
- Windows Security logs showing privilege escalation events (Event ID 4672, 4688)
- Unexpected process creation with SYSTEM privileges
- Driver installation or modification events
Network Indicators:
- Unusual outbound connections from instrument control systems
- Lateral movement attempts from these systems
SIEM Query:
source="Windows Security" AND (EventID=4672 OR EventID=4688) AND (ProcessName contains "Xcalibur" OR ProcessName contains "Foundation")