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Vulnerabilities

Vulnerability · CVE-2021-28150

hongdian h8922 Direct Request ('Forced Browsing')

Published Aug 23, 2025 · catalog updated Aug 23, 2025 · hongdian h8922 Direct Request

Patch now

CVE-2021-28150 is in the CISA known-exploited catalog. Confirm hongdian h8922 Direct Request against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (hongdian h8922 Direct Request).
  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
2.79%
Remediation
Remediation guidance
Affected products
vendor hongdian h8922

Hongdian H8922 3.0.5 devices allow the unprivileged guest user to read cli.conf (with the administrator password and other sensitive data) via /backup2.cgi.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor hongdian h8922version unspecified

How to fix CVE-2021-28150

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2021-28150 is in the CISA known-exploited catalog. Confirm hongdian h8922 Direct Request against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 2.79%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 23, 2025 · VulnCheck KEV

    Detected

    Hongdian H8922 3.0.5 devices allow the unprivileged guest user to read cli.conf (with the administrator password and other sensitive data) via /backup2.cgi.

  2. Aug 23, 2025 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2021-28150

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-28150

    30-day exploitation probability 2.8%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2021-28150

    Hongdian H8922 3.0.5 devices allow the unprivileged guest user to read cli.conf (with the administrator password and other sensitive data) via /backup2.cgi.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.