CVE-2026-23719
📋 TL;DR
A heap-based buffer overflow vulnerability in Simcenter Femap and Simcenter Nastran allows attackers to execute arbitrary code by tricking users into opening malicious NDB files. All organizations using these engineering simulation software packages before version V2512 are affected. This could lead to complete system compromise.
💻 Affected Systems
- Simcenter Femap
- Simcenter Nastran
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with SYSTEM/root privileges leading to complete system takeover, data theft, and lateral movement within the network.
Likely Case
Local privilege escalation or arbitrary code execution in the context of the current user when opening a malicious NDB file.
If Mitigated
Application crash or denial of service if exploit fails or is blocked by security controls.
🎯 Exploit Status
Requires user interaction to open malicious NDB file. Heap exploitation requires precise control of memory layout.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V2512
Vendor Advisory: https://cert-portal.siemens.com/productcert/html/ssa-965753.html
Restart Required: Yes
Instructions:
1. Download V2512 update from Siemens support portal. 2. Backup current installation. 3. Run installer with administrative privileges. 4. Restart system after installation completes.
🔧 Temporary Workarounds
Restrict NDB file handling
allBlock or restrict opening of NDB files from untrusted sources
Application sandboxing
allRun Simcenter applications in isolated environments or with reduced privileges
🧯 If You Can't Patch
- Implement strict file validation policies to block NDB files from untrusted sources
- Use application whitelisting to restrict execution of Simcenter software to trusted users only
🔍 How to Verify
Check if Vulnerable:
Check software version in Help > About menu. If version is earlier than V2512, system is vulnerable.Check Version:
Not applicable - check via GUI Help > About menuVerify Fix Applied:
Verify version shows V2512 or later in Help > About menu and test opening known-good NDB files.📡 Detection & Monitoring
Log Indicators:
- Application crashes with access violation errors
- Unusual process creation from Simcenter executables
Network Indicators:
- Unexpected outbound connections from Simcenter processes
SIEM Query:
EventID=1000 OR EventID=1001 AND ProcessName contains "femap" OR "nastran"