Path Traversal in Draytek Vigorconnect
CVE-2021-20125
An arbitrary file upload and directory traversal vulnerability exists in the file upload functionality of DownloadFileServlet in Draytek VigorConnect 1.6.0-B3. An unauthenticated attacker could leverage this vulnerability to upload files to any location on the target operating system with root privileges.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.039 (90.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.039 · newest: 0.039 · change: 0.000
Affected products
- Draytek Vigorconnect — versions 1.6.0
- Draytek Vigorconnect — versions 1.6.0-B3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.tenable.com/security/research/tra-2021-42 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-20125?
- CVE-2021-20125 is a critical-severity vulnerability in Draytek Vigorconnect, classified under Path Traversal. CVSS score: 9.8/10. Published 2021-10-13.
- How severe is CVE-2021-20125?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-20125 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.