CVE-2025-26441
📋 TL;DR
This CVE describes an out-of-bounds read vulnerability in Android's Bluetooth SDP discovery component that could allow remote attackers to read sensitive memory contents without authentication or user interaction. It affects Android devices with vulnerable Bluetooth implementations, potentially exposing device information to nearby attackers.
💻 Affected Systems
- Android
📦 What is this software?
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Remote attacker could read sensitive memory contents including cryptographic keys, authentication tokens, or other device secrets, leading to complete device compromise.
Likely Case
Information disclosure of limited memory contents, potentially revealing device identifiers, Bluetooth pairing information, or other system data.
If Mitigated
Limited impact with proper network segmentation and Bluetooth access controls, potentially only exposing non-sensitive system information.
🎯 Exploit Status
Exploitation requires proximity to target device and knowledge of Bluetooth protocol; no authentication needed
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: June 2025 Android Security Patch or later
Vendor Advisory: https://source.android.com/security/bulletin/2025-06-01
Restart Required: No
Instructions:
1. Check for Android system updates in Settings > System > System update. 2. Apply June 2025 security patch or later. 3. Verify patch installation in Settings > About phone > Android security patch level.
🔧 Temporary Workarounds
Disable Bluetooth when not in use
AndroidTurn off Bluetooth to prevent remote exploitation via this vulnerability
adb shell settings put global bluetooth_on 0
Settings > Connected devices > Connection preferences > Bluetooth > Turn off
Set Bluetooth to non-discoverable mode
AndroidConfigure Bluetooth to be non-discoverable to reduce attack surface
adb shell settings put global bluetooth_discoverability 0
Settings > Connected devices > Connection preferences > Bluetooth > Device name > Turn off visibility
🧯 If You Can't Patch
- Implement network segmentation to isolate Bluetooth traffic
- Deploy Bluetooth security monitoring and anomaly detection
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android security patch level. If date is before June 2025, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify Android security patch level shows June 2025 or later date in Settings > About phone > Android security patch level.📡 Detection & Monitoring
Log Indicators:
- Unusual Bluetooth SDP discovery requests
- Multiple failed Bluetooth connection attempts from unknown devices
Network Indicators:
- Abnormal Bluetooth traffic patterns
- SDP discovery requests from unexpected MAC addresses
SIEM Query:
source="android_logs" AND (event="bluetooth_sdp_discovery" OR event="bluetooth_connection_attempt") AND result="failed"