CVE-2021-28152
high-risk
Published 2021-05-06
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.
Do I need to act?
!
37.5% chance of exploitation in next 30 days
EPSS score — higher than 63% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
References (4)
53
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
16/34 · Moderate
Exposure
5/34 · Minimal