CVE-2020-37220
Huawei HG630 V2 Router Authentication Bypass via Serial Number
- State
- Published
- Severity
- 8.7 High
- Published
- May 13, 2026
- Updated
- May 26, 2026
- Reserved
- May 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-798 Use of Hard-coded Credentials
Affected Products
| Product | Versions |
|---|---|
HG630 V2 Routerwww.huawei.com |
|
References
- ExploitDB-48310exploit
- Referencethird-party-advisory
- VulnCheck Advisory: Huawei HG630 V2 Router Authentication Bypass via Serial Numberthird-party-advisory
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