Vulnerability in Www.huawei.com Hg630 V2 Router
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (26.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Www.huawei.com Hg630 V2 Router — versions 0
- Www.huawei.com Huawei Hg630 Router — versions HG630 V2
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/48310 (exploit)
- www.youtube.com/watch (third-party-advisory)
- www.vulncheck.com/advisories/huawei-hg630-v2-router-authentication-bypass-via-s… (third-party-advisory)
Frequently asked questions
- What is CVE-2020-37220?
- CVE-2020-37220 is a high-severity vulnerability in Www.huawei.com Hg630 V2 Router, classified under Use of Hard-coded Credentials. CVSS score: 7.5/10. Published 2026-05-13.
- How severe is CVE-2020-37220?
- High severity. CVSS v3 base score is 7.5 out of 10.