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URL: https://nvd.nist.gov/vuln/detail/CVE-2021-28149

⇱ NVD - CVE-2021-28149

  1. Vulnerabilities

CVE-2021-28149 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

Hongdian H8922 3.0.5 devices allow Directory Traversal. The /log_download.cgi log export handler does not validate user input and allows a remote attacker with minimal privileges to download any file from the device by substituting ../ (e.g., ../../etc/passwd) This can be carried out with a web browser by changing the file name accordingly. Upon visiting log_download.cgi?type=../../etc/passwd and logging in, the web server will allow a download of the contents of the /etc/passwd file.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://en.hongdian.com/Products/Details/H8922 CVE, MITRE Product  Vendor Advisory 
https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/ CVE, MITRE Exploit  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') 👁 cwe source acceptance level
NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

4 change records found show changes

CVE Modified by MITRE 6/16/2026 11:45:53 PM

Action Type Old Value New Value
Added Affected 
[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]

CVE Modified by CVE 11/21/2024 12:59:11 AM

Action Type Old Value New Value
Added Reference 
http://en.hongdian.com/Products/Details/H8922
Added Reference 
https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/

CVE Modified by MITRE 5/14/2024 4:41:34 AM

Action Type Old Value New Value

Initial Analysis by NIST 5/13/2021 2:55:08 PM

Action Type Old Value New Value
Added CVSS V3.1 
NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Added CVSS V2 
NIST (AV:N/AC:L/Au:S/C:P/I:N/A:N)
Added CWE 
NIST CWE-22
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:hongdian:h8922_firmware:3.0.5:*:*:*:*:*:*:*
 OR
 cpe:2.3:h:hongdian:h8922:-:*:*:*:*:*:*:*
Changed Reference Type 
http://en.hongdian.com/Products/Details/H8922 No Types Assigned


 
http://en.hongdian.com/Products/Details/H8922 Product, Vendor Advisory
Changed Reference Type 
https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/ No Types Assigned


 
https://ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/ Exploit, Third Party Advisory

Quick Info

CVE Dictionary Entry:
CVE-2021-28149
NVD Published Date:
05/06/2021
NVD Last Modified:
06/16/2026
Source:
MITRE