CVE-2025-66327
📋 TL;DR
A race condition vulnerability in the network module could allow attackers to access sensitive information during concurrent operations. This affects Huawei products with the vulnerable network module. Service confidentiality is at risk if exploited.
💻 Affected Systems
- Huawei products with vulnerable network module
📦 What is this software?
Harmonyos by Huawei
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Attackers could intercept or access confidential network data, potentially exposing sensitive communications or credentials.
Likely Case
Information disclosure of network traffic or configuration data during specific timing windows.
If Mitigated
Limited exposure with proper network segmentation and access controls in place.
🎯 Exploit Status
Race conditions require precise timing and may need local access or specific conditions
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Huawei advisory for specific fixed versions
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2025/12/
Restart Required: Yes
Instructions:
1. Review Huawei security advisory 2. Identify affected products/versions 3. Apply recommended patches 4. Restart affected services
🔧 Temporary Workarounds
Network segmentation
allIsolate affected systems to limit potential data exposure
Access control hardening
allRestrict network access to affected modules
🧯 If You Can't Patch
- Implement strict network segmentation to limit exposure
- Monitor network traffic for unusual patterns or data exfiltration
🔍 How to Verify
Check if Vulnerable:
Check Huawei advisory for affected product versions and compare with your deploymentCheck Version:
Product-specific command - refer to Huawei documentationVerify Fix Applied:
Verify patch installation and confirm version is updated per Huawei guidance📡 Detection & Monitoring
Log Indicators:
- Unusual network module errors
- Timing-related failures in network operations
Network Indicators:
- Unexpected data patterns in network traffic
- Timing anomalies in network communications
SIEM Query:
Search for network module errors or timing-related failures in system logs