CVE-2020-37220
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductHG630 V2 Router
PublishedMay 13, 2026
First seenMay 13, 2026
Weakness typeCWE-798Hard-coded credentials
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| www.huawei.com HG630 V2 Router | 0 | — |
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