September 3, 2024 · Applied Cybernetics Group
CVE-2021-20123 — DrayTek VigorConnect
Draytek VigorConnect Path Traversal Vulnerability
- Added to KEV
2024-09-03- Federal due date
2024-09-24- Vendor
- DrayTek
- Product
- VigorConnect
- EPSS
- 99.8th percentile (score 0.935, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-20123
CISA short description
Draytek VigorConnect contains a path traversal vulnerability in the DownloadFileServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.