CVE-2025-14055
📋 TL;DR
An integer underflow vulnerability in Silicon Labs Secure NCP host implementation allows attackers to read beyond allocated memory buffers via specially crafted packets. This affects systems using Silicon Labs Secure NCP implementations for wireless communication. The vulnerability could lead to information disclosure or system crashes.
💻 Affected Systems
- Silicon Labs Secure NCP host implementations
⚠️ 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
Remote code execution through memory corruption leading to complete system compromise
Likely Case
Information disclosure through memory leakage or denial of service via system crashes
If Mitigated
Limited information disclosure with proper network segmentation and monitoring
🎯 Exploit Status
Requires network access to send crafted packets to vulnerable systems
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched versions
Vendor Advisory: https://community.silabs.com/068Vm00000gvJlq
Restart Required: Yes
Instructions:
1. Review Silicon Labs advisory 2. Update affected firmware/software to patched version 3. Restart affected devices 4. Verify patch installation
🔧 Temporary Workarounds
Network Segmentation
allIsolate vulnerable devices from untrusted networks
Packet Filtering
allBlock suspicious packets to Silicon Labs NCP ports
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure
- Monitor for unusual network traffic patterns to/from affected devices
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against vendor advisoryCheck Version:
Device-specific command - consult vendor documentationVerify Fix Applied:
Verify firmware version matches patched version from vendor📡 Detection & Monitoring
Log Indicators:
- Memory access violations
- Unexpected device restarts
- Abnormal packet processing errors
Network Indicators:
- Unusual packet sizes to Silicon Labs NCP ports
- Malformed packet patterns
SIEM Query:
source_port:xxxx OR dest_port:xxxx AND (packet_size:anomalous OR protocol_violation)