CVE-2025-61616
📋 TL;DR
This vulnerability in nr modem software allows remote attackers to cause a system crash through improper input validation, leading to denial of service. The attack requires no special privileges and affects systems using vulnerable nr modem implementations. This impacts telecommunications infrastructure and devices relying on this modem technology.
💻 Affected Systems
- Unisoc nr modem implementations
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash leading to extended service disruption, potentially affecting multiple connected devices or network segments.
Likely Case
Temporary denial of service affecting individual devices or localized network segments until system restart.
If Mitigated
Limited impact with proper network segmentation and monitoring, allowing quick detection and recovery.
🎯 Exploit Status
Remote exploitation without authentication suggests relatively straightforward attack vectors
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Consult vendor advisory for specific patched versions
Vendor Advisory: https://www.unisoc.com/en/support/announcement/2030931350138310657
Restart Required: Yes
Instructions:
1. Review vendor advisory for affected products
2. Obtain firmware update from vendor
3. Apply firmware update following vendor instructions
4. Restart affected systems
🔧 Temporary Workarounds
Network segmentation
allIsolate vulnerable modem systems from untrusted networks
Input validation at network perimeter
allImplement additional input validation at network boundaries
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure to trusted sources only
- Monitor for abnormal modem behavior and system crashes with automated alerting
🔍 How to Verify
Check if Vulnerable:
Check modem firmware version against vendor advisory; monitor for unexplained system crashesCheck Version:
Vendor-specific command; consult device documentationVerify Fix Applied:
Verify firmware version matches patched version from vendor advisory; test system stability📡 Detection & Monitoring
Log Indicators:
- Unexpected system crashes
- Modem error messages
- Kernel panic logs
Network Indicators:
- Unusual traffic patterns to modem interfaces
- Connection attempts to modem ports
SIEM Query:
Search for 'crash', 'panic', or 'modem error' in system logs within short timeframes