CVE-2025-54631 – This CVE describes an integer overflow vulnerab... (How to Fix)

Q: What is the severity of CVE-2025-54631?

CVE-2025-54631 has a CVSS score of 6.7 (MEDIUM). This CVE describes an integer overflow vulnerability in Huawei's partition module where insufficient data length verification allows attackers to cause denial of service. The vulnerability affects Huawei devices with the vulnerable partition module. Successful exploitation could crash affected systems or cause instability.

📋 TL;DR

This CVE describes an integer overflow vulnerability in Huawei's partition module where insufficient data length verification allows attackers to cause denial of service. The vulnerability affects Huawei devices with the vulnerable partition module. Successful exploitation could crash affected systems or cause instability.

💻 Affected Systems

Products:

Huawei devices with vulnerable partition module

Versions: Specific versions not detailed in provided reference; check Huawei advisory for exact affected versions

Operating Systems: Huawei HarmonyOS, Android-based Huawei systems

Default Config Vulnerable: ⚠️ Yes

Notes: Affects devices where the partition module processes untrusted input; exact product list requires checking Huawei's detailed advisory

📦 What is this software?

Harmonyos by Huawei

View all CVEs affecting Harmonyos →

Harmonyos by Huawei

View all CVEs affecting Harmonyos →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system crash or device bricking requiring hardware intervention to recover

🟠

Likely Case

System instability, application crashes, or temporary denial of service

🟢

If Mitigated

No impact with proper patching and input validation

🌐 Internet-Facing: MEDIUM - Requires specific conditions but could be triggered remotely if vulnerable services are exposed

🏢 Internal Only: MEDIUM - Local attackers or malicious processes could trigger the vulnerability

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation requires sending specially crafted data to the partition module; may require local access or specific service access

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Check Huawei security bulletin for specific patched versions

Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2025/8/

Restart Required: No

Instructions:

1. Visit Huawei security advisory. 2. Identify affected products/versions. 3. Apply security updates via official channels. 4. Verify update installation.

🔧 Temporary Workarounds

Input validation enhancement

all

Implement additional input validation for partition-related operations

Access restriction

all

Restrict access to partition management functions to trusted processes only

🧯 If You Can't Patch

Implement network segmentation to isolate vulnerable devices
Monitor for abnormal system behavior or crashes related to partition operations

🔍 How to Verify

Check if Vulnerable:

Check device firmware version against Huawei's affected versions list in the advisory

Check Version:

Settings > About phone > Build number (varies by device model)

Verify Fix Applied:

Verify installed firmware version matches or exceeds patched versions listed in Huawei advisory

📡 Detection & Monitoring

Log Indicators:

Unexpected system crashes
Partition-related error messages
Kernel panic logs

Network Indicators:

Unusual partition-related network traffic if exposed

SIEM Query:

Search for: 'partition module error' OR 'system crash' OR 'kernel panic' on affected devices

📊 Metadata

CVE ID: CVE-2025-54631

CVSS v3 Score: 6.7 (MEDIUM)

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-190

EPSS Score: 0.01% exploit probability (0.8th percentile)

Published: August 6, 2025

Last Updated: August 20, 2025

🔗 References

https://consumer.huawei.com/en/support/bulletin/2025/8/ Vendor Advisory

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🔗 Related Vulnerabilities

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