CVSS v3
9.8
CRITICAL
EPSS Score
37.5%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
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.
Active exploitation of CVE-2021-28152 has not been confirmed. The EPSS score is 37.5%, indicating the estimated probability of exploitation in the next 30 days.
CVE-2021-28152 has a CVSS v3 base score of 9.8 (CRITICAL severity).
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Ranked by exploit probability (EPSS).