CVE-2020-37220: Www.huawei.com HG630 v2 Router

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Www.huawei.com HG630 v2 Router: version 0 only

Published 2026-05-13. Last modified 2026-06-17.