PT-2021-17778 · Hongdian · Hongdian H8922

Konstantin Burov + 1 · Published 2021-05-06 · Updated 2023-08-08 · CVE-2021-28152

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Hongdian H8922 version 3.0.5

Description: The issue concerns an undocumented feature in the affected device, allowing unauthorized access to a shell with superuser privileges. This access is facilitated through the telnet service on port 5188, using default credentials root and superzxmn.

Recommendations: For Hongdian H8922 version 3.0.5, consider changing the default credentials immediately and restrict access to the telnet service on port 5188 to prevent unauthorized access. As a temporary workaround, consider disabling the telnet service until a more secure configuration or update is available.

Exploit

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2021-28152

Affected Products

Hongdian H8922

References · 4

• 🔥 https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-28152 · Security Note
• https://osv.dev/vulnerability/CVE-2021-28152 · Vendor Advisory
• http://en.hongdian.com/Products/Details/H8922 · Vendor Advisory