Hongdian H8922 3.0.5 devices have an undocumented feature that allows access to a shell…
Priority MEDIUM 50CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.
Summary
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.
Why it matters now
EPSS 0.05185 92nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-28152
- 2026-10-03 Alias added: GHSA-pqm8-v9ww-9q73
References
More Hongdian H8922 Firmware vulnerabilities
- TI-2021-09382 Hongdian H8922 3.0.5 devices allow OS command injection via shell metacharacters into the… CVSS 3.1HIGH 8.8
- TI-2021-09380 Hongdian H8922 3.0.5 devices allow Directory Traversal. CVSS 3.1MEDIUM 6.5
- TI-2021-09381 Hongdian H8922 3.0.5 devices allow the unprivileged guest user to read cli.conf (with the… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2021-28152 · CVE Program
- CVE-2021-28152 · NVD
- FIRST EPSS
- GHSA-pqm8-v9ww-9q73 · GitHub Advisory Database · CC BY 4.0
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