CVE-2025-36912
📋 TL;DR
This vulnerability in cellular modem firmware allows remote attackers to cause denial of service without user interaction or special privileges. It affects Android devices with vulnerable modem chipsets, potentially impacting cellular connectivity for affected users.
💻 Affected Systems
- Google Pixel devices with vulnerable modem firmware
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete loss of cellular connectivity requiring device reboot or service intervention
Likely Case
Temporary cellular service disruption until modem resets
If Mitigated
Minimal impact with proper network segmentation and monitoring
🎯 Exploit Status
No authentication required; exploit likely involves specially crafted cellular network packets
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: December 2025 Android security update
Vendor Advisory: https://source.android.com/security/bulletin/pixel/2025-12-01
Restart Required: Yes
Instructions:
1. Check for system updates in Settings > System > System update. 2. Install December 2025 security update. 3. Reboot device after installation.
🔧 Temporary Workarounds
Disable cellular data
androidSwitch to Wi-Fi only mode to prevent cellular modem exploitation
Settings > Network & internet > Mobile network > Mobile data (toggle off)
Airplane mode toggle
androidTemporarily disable all wireless radios including cellular
Settings > Network & internet > Airplane mode (toggle on)
🧯 If You Can't Patch
- Segment cellular network traffic and monitor for anomalous modem behavior
- Implement network-level filtering for suspicious cellular protocol traffic
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version > Build numberCheck Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows 'December 1, 2025' or later📡 Detection & Monitoring
Log Indicators:
- Modem crash logs
- Unexpected cellular service disconnections
- Baseband processor errors
Network Indicators:
- Abnormal cellular protocol packets
- Suspicious modem reset patterns
SIEM Query:
source="android_logs" AND ("modem_crash" OR "baseband_failure" OR "cellular_service_lost")