CVE-2020-37220 - CVE House
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Status published High CVE-2020-37220

Huawei HG630 V2 Router Authentication Bypass via Serial Number

Vulnerability Description

Huawei HG630 V2 router contains an authentication bypass vulnerability that allows unauthenticated attackers to obtain administrative access by retrieving the device serial number. Attackers can query the /api/system/deviceinfo endpoint without authentication to extract the SerialNumber field, then use the last 8 characters as the default password to log in to the router.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Eslam Medhat

Affected Vendor

www.huawei.com

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Affected Software

HG630 V2 Router
Vulnerable Versions:
0

Timeline

Official Publish: May 13th, 2026
Last Modified: May 26th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses (CWE)