CVE-2021-20125: draytek vigorconnect Path Traversal
Vulnerability summary
CVE-2021-20125 is a high (CVSS 10.0) Path Traversal vulnerability in draytek vigorconnect. EPSS estimates a 3.95% chance of exploitation in the next 30 days, higher than 90.3% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 13-10-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
3.95%
Chance of exploitation in the next 30 days
Percentile
90%
Versus all other CVEs
30-day change
No change 0.00 pp
From 3.95% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (tenable.com)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
- CWE-434Unrestricted Upload of File with Dangerous TypeThe product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
Affected systems
Draytek1 product
- vigorconnect1.6.0:beta3
1 vendor · 1 product