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CVE-2021-20123: Draytek VigorConnect Path Traversal Vulnerability
DrayTek VigorConnect · in CISA KEV since 2024-09-03
2024-09-03added to KEV
2024-09-24federal remediation due date
90.23%EPSS exploit probability (30 days) 99.8th percentile
7.5 HIGHCVSS 3.1
Unknownknown ransomware use
1,056days from NVD publication to KEV
What it is
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 (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
| CWE | CWE-22 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD published | 2021-10-13 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2021-20123.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.
Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.