CVE-2025-14933
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code by exploiting an integer overflow in NSF Unidata NetCDF-C when processing malicious files or web content. Users who open specially crafted NetCDF files or visit malicious websites are affected. The vulnerability enables code execution with the privileges of the current user.
💻 Affected Systems
- NSF Unidata NetCDF-C
📦 What is this software?
Netcdf by Unidata
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, and lateral movement within the network.
Likely Case
Local privilege escalation or remote code execution when users open malicious NetCDF files from untrusted sources.
If Mitigated
Denial of service or application crash if exploit attempts are blocked by security controls.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file). The vulnerability is in ZDI-CAN-27266, suggesting professional research but no public exploit yet.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific fixed version
Vendor Advisory: https://www.zerodayinitiative.com/advisories/ZDI-25-1151/
Restart Required: Yes
Instructions:
1. Check current NetCDF-C version
2. Update to patched version from official vendor source
3. Restart affected applications/services
4. Recompile applications using NetCDF-C library
🔧 Temporary Workarounds
Restrict NetCDF file processing
allBlock or sandbox processing of NetCDF files from untrusted sources
Application sandboxing
allRun NetCDF processing applications in restricted environments
🧯 If You Can't Patch
- Implement strict file validation for NetCDF files before processing
- Use application allowlisting to prevent unauthorized NetCDF processing applications
🔍 How to Verify
Check if Vulnerable:
Check NetCDF-C library version and compare against patched versions in vendor advisoryCheck Version:
nc-config --version or check library version in application dependenciesVerify Fix Applied:
Verify NetCDF-C version is updated to patched version and test with known safe NetCDF files📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing NetCDF files
- Unusual memory allocation patterns in NetCDF processing applications
Network Indicators:
- Downloads of NetCDF files from untrusted sources
- HTTP requests for .nc files from suspicious domains
SIEM Query:
Process execution of netcdf applications OR file creation with .nc extension from network sources