CVE-2020-37220

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.exploit-db.com/exploits/48310
https://www.vulncheck.com/advisories/huawei-hg630-v2-router-authentication-bypass-via-serial-number
https://www.youtube.com/watch?v=vOrIL7L_cVc

Configurations

No configuration.

History

No history.

Information

Published : 2026-05-13 16:16

Updated : 2026-06-17 03:17

NVD link : CVE-2020-37220

Mitre link : CVE-2020-37220

CVE.ORG link : CVE-2020-37220

JSON object : View

Products Affected

No product.

CWE

CWE-798

Use of Hard-coded Credentials

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