VYPR
Critical severity9.8NVD Advisory· Published May 6, 2021· Updated Jun 17, 2026

CVE-2021-28152

CVE-2021-28152

Description

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.

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Affected products

2

Patches

Vulnerability mechanics

References

2

News mentions

0

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