CVE-2021-28152 json
Hongdian H8922 3.0.5 devices have an undocumented feature that allows access to a shell as a superuser.
published 2021-05-06 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14850
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 5.2%
- EPSS 5.2% chance of exploitation in 30 days, percentile 92%
- public exploits
- 0
- none known
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.
Exploit prediction
5.18% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- ssd-disclosure.com https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
ssd-disclosure.com
/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/
exploit, third-party-advisory
-
en.hongdian.com
/Products/Details/H8922
product, vendor-advisory
Sources
- CVE List CVE-2021-28152
- NVD CVE-2021-28152
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