CVE-2025-46586
📋 TL;DR
A permission control vulnerability in Huawei's contacts module allows unauthorized access or manipulation of contact data. This affects Huawei devices running vulnerable software versions. The vulnerability primarily impacts availability of contact services.
💻 Affected Systems
- Huawei smartphones and tablets
📦 What is this software?
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Complete denial of contact services, preventing users from accessing or managing their contacts, potentially disrupting communication functionality.
Likely Case
Intermittent contact service disruption or corruption of contact data, requiring manual restoration or service restart.
If Mitigated
Minimal impact with proper access controls and monitoring in place, potentially causing temporary service degradation.
🎯 Exploit Status
Exploitation likely requires local access or malicious application installation; no public exploit details available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Huawei security bulletin for specific patched versions
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2025/5/
Restart Required: Yes
Instructions:
1. Check for system updates in device Settings > System & updates > Software update. 2. Install available security updates. 3. Restart device after update completion.
🔧 Temporary Workarounds
Restrict app permissions
allReview and restrict unnecessary permissions for contacts-related applications
Disable unnecessary contacts access
allRevoke contacts permission from non-essential applications
🧯 If You Can't Patch
- Implement strict application whitelisting to prevent unauthorized apps from accessing contacts
- Monitor for unusual contacts access patterns and implement network segmentation for mobile devices
🔍 How to Verify
Check if Vulnerable:
Check device software version against Huawei's security bulletin for affected versionsCheck Version:
Settings > About phone > Software information > Build numberVerify Fix Applied:
Verify software version is updated beyond vulnerable versions listed in Huawei advisory📡 Detection & Monitoring
Log Indicators:
- Unusual contacts database access patterns
- Multiple failed permission requests to contacts module
- Unexpected application crashes in contacts service
Network Indicators:
- Unusual contacts sync activity
- Abnormal backup/export of contact data
SIEM Query:
Application logs showing contacts permission violations or unusual access patterns to contacts database