Path Traversal in Hongdian H8922
CVE-2021-28149
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.159 (96.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.159 · newest: 0.159 · change: 0.000
Affected products
- Hongdian H8922
- Hongdian H8922 Firmware — versions 3.0.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- en.hongdian.com/Products/Details/H8922 (Product, Vendor Advisory)
- ssd-disclosure.com/ssd-advisory-hongdian-h8922-multiple-vulnerabilities/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-28149?
- CVE-2021-28149 is a medium-severity vulnerability in Hongdian H8922, classified under Path Traversal. CVSS score: 6.5/10. Published 2021-05-06.
- How severe is CVE-2021-28149?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-28149 known to be exploited?
- 17 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.