CVE-2026-0619
📋 TL;DR
An integer wraparound vulnerability in Silicon Labs' Matter SDK creates an infinite loop that causes denial of service. Attackers can trigger this to freeze affected IoT devices, requiring a hard reset to recover. This affects devices using vulnerable versions of the Matter SDK.
💻 Affected Systems
- Silicon Labs Matter SDK
⚠️ 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
Permanent device unavailability requiring physical intervention to reset, disrupting critical IoT operations
Likely Case
Temporary service disruption until manual reset, affecting device functionality
If Mitigated
Limited impact with proper network segmentation and monitoring
🎯 Exploit Status
Requires ability to send crafted packets to trigger integer wraparound condition
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Silicon Labs advisory for specific fixed version
Vendor Advisory: https://community.silabs.com/068Vm00000gUB2g
Restart Required: No
Instructions:
1. Check Silicon Labs advisory for affected versions 2. Update Matter SDK to patched version 3. Rebuild and redeploy firmware to affected devices
🔧 Temporary Workarounds
Network Segmentation
allIsolate Matter devices from untrusted networks
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure
- Monitor for abnormal device behavior indicating DoS attempts
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Silicon Labs advisoryCheck Version:
Device-specific command to check Matter SDK versionVerify Fix Applied:
Verify SDK version is updated beyond vulnerable range📡 Detection & Monitoring
Log Indicators:
- Device unresponsive logs
- Reset events
- Abnormal packet patterns
Network Indicators:
- Unusual Matter protocol traffic patterns
- Repeated connection attempts
SIEM Query:
search 'device unresponsive' OR 'hard reset' AND source='matter_device'