CVE-2020-37220
HIGH EPSS 27.5%
Published May 13, 20261mo ago · Modified Jun 17, 20262w ago
8.7 CVSS 4.0
Published May 13, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
27.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-798 Use of Hard-coded Credentials Authentication
References 3
- exploit-db.com https://www.exploit-db.com/exploits/48310
- vulncheck.com https://www.vulncheck.com/advisories/huawei-hg630-v2-router-authentication-bypass-via-serial-number
- youtube.com https://www.youtube.com/watch?v=vOrIL7L_cVc
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.