CVE-2025-48593
📋 TL;DR
This vulnerability allows remote code execution via a use-after-free flaw in Android's Bluetooth Hands-Free Profile client component. Attackers can exploit this without user interaction or additional privileges. All Android devices with vulnerable Bluetooth implementations are affected.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise allowing attacker to execute arbitrary code with system privileges, potentially leading to data theft, surveillance, or device control.
Likely Case
Remote code execution leading to malware installation, data exfiltration, or device joining a botnet.
If Mitigated
Limited impact if Bluetooth is disabled or device is not discoverable, though exploitation could still occur if Bluetooth is enabled.
🎯 Exploit Status
No user interaction required. Exploitation requires proximity or network access to Bluetooth interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: November 2025 Android Security Patch or later
Vendor Advisory: https://source.android.com/security/bulletin/2025-11-01
Restart Required: Yes
Instructions:
1. Check for system updates in Settings > System > System update. 2. Install November 2025 Android Security Patch or later. 3. Reboot device after installation.
🔧 Temporary Workarounds
Disable Bluetooth
androidTurn off Bluetooth to prevent exploitation
adb shell settings put global bluetooth_on 0
Settings > Connected devices > Connection preferences > Bluetooth > Toggle off
Disable Bluetooth discovery
androidMake device non-discoverable to reduce attack surface
adb shell am start -a android.settings.BLUETOOTH_SETTINGS
Toggle off 'Make device discoverable'
🧯 If You Can't Patch
- Disable Bluetooth completely when not in use
- Use device in areas with controlled Bluetooth access (avoid public spaces)
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android version > Security patch level. If before November 2025, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows November 2025 or later after update.📡 Detection & Monitoring
Log Indicators:
- Unusual Bluetooth connection attempts
- Crash logs from bta_hf_client processes
- Suspicious process creation after Bluetooth events
Network Indicators:
- Anomalous Bluetooth pairing requests
- Unexpected Bluetooth service discovery
SIEM Query:
source="android_logs" AND (process="bta_hf_client" OR message="*use-after-free*" OR message="*Bluetooth crash*")