CVE-2025-40762
📋 TL;DR
An out-of-bounds write vulnerability in Simcenter Femap allows remote code execution when parsing malicious STP files. Attackers can execute arbitrary code within the current process context. All users of Simcenter Femap V2406 before V2406.0003 and V2412 before V2412.0002 are affected.
💻 Affected Systems
- Simcenter Femap V2406
- Simcenter Femap V2412
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via remote code execution, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation or arbitrary code execution when users open malicious STP files, potentially leading to malware installation or data exfiltration.
If Mitigated
Limited impact if proper file validation and user awareness prevent malicious file execution, though risk remains for legitimate file processing.
🎯 Exploit Status
Exploitation requires user interaction to open malicious STP files. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V2406.0003 for V2406, V2412.0002 for V2412
Vendor Advisory: https://cert-portal.siemens.com/productcert/html/ssa-674084.html
Restart Required: Yes
Instructions:
1. Download the appropriate patch from Siemens support portal. 2. Close all Femap instances. 3. Run the installer with administrative privileges. 4. Restart the system to complete installation.
🔧 Temporary Workarounds
Restrict STP file processing
allBlock or restrict processing of STP files from untrusted sources
User awareness training
allTrain users to only open STP files from trusted sources
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of unauthorized code
- Use network segmentation to isolate Femap systems from critical assets
🔍 How to Verify
Check if Vulnerable:
Check Femap version via Help > About menu. If version is V2406 < 0003 or V2412 < 0002, system is vulnerable.Check Version:
Not applicable - check via GUI Help > About menuVerify Fix Applied:
Verify version shows V2406.0003 or V2412.0002 in Help > About menu after patching.📡 Detection & Monitoring
Log Indicators:
- Unexpected process crashes when opening STP files
- Suspicious child processes spawned from Femap
Network Indicators:
- Unexpected outbound connections from Femap process
SIEM Query:
Process creation where parent process contains 'femap' AND (command line contains '.stp' OR file extension is '.stp')