CVE-2021-28152

EUVD-2021-14850
Hongdian H8922 3.0.5 devices have an undocumented feature that allows access to a shell as a superuser. To connect, the telnet service is used on port 5188 with the default credentials of root:superzxmn.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 97%
Affected Products (NVD)
VendorProductVersion
hongdianh8922_firmware
3.0.5
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
http://en.hongdian.com/Products/Details/H8922
https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/
http://en.hongdian.com/Products/Details/H8922
https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/