CVE-2020-37220 Details
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.
An authentication bypass vulnerability has been identified in the Huawei HG630 V2 router. This vulnerability allows unauthenticated attackers to gain administrative access by exploiting the device's serial number. Attackers can access the '/api/system/deviceinfo' endpoint without authentication to retrieve the serial number, which is then used to log into the router using a default password derived from the last eight characters of the serial number.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 13, 2026CISA-ADP
Assessed May 14, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-798 | Use of Hard-coded Credentials | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Huawei HG630 V2 | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 26, 2026 | CVE Modified | [email protected] |
| May 13, 2026 | New CVE Received | [email protected] |