CVE-2021-28151

Name: CVE-2021-28151
Creator: NVD / NIST
Published: 2021-05-06T16:15:07.39+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 27.91%

Last modified Jun 17, 2026

CVE-2021-28151 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Hongdian H8922 3.0.5 devices allow OS command injection via shell metacharacters into the ip-address (aka Destination) field to the tools.cgi ping command, which is accessible with the username guest and password guest.. EPSS estimates a 27.91% chance of exploitation in the next 30 days.

Description

Hongdian H8922 3.0.5 devices allow OS command injection via shell metacharacters into the ip-address (aka Destination) field to the tools.cgi ping command, which is accessible with the username guest and password guest.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

27.91%

97.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Hongdian	H8922 Firmware	3.0.5

References

http://en.hongdian.com/Products/Details/H8922Product, Vendor Advisory
https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/Exploit, Third Party Advisory
http://en.hongdian.com/Products/Details/H8922Product, Vendor Advisory
https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/Exploit, Third Party Advisory

Timeline

Published: May 6, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-28151?

How severe is CVE-2021-28151?

CVE-2021-28151 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 27.91% probability of exploitation in the next 30 days.

How do I fix CVE-2021-28151?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-28151?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST