CVE-2021-20124—Draytek VigorConnect Path Traversal Vulnerability

Vulnerability Name

Draytek VigorConnect Path Traversal Vulnerability

Description

Draytek VigorConnect contains a path traversal vulnerability in the file download functionality of the WebServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:

Unknown

Action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Additional Notes

• https://www.draytek.com/about/security-advisory/vigorconnect-software-security-vulnerability-(cve-2021-20123-cve-2021-20129)
• https://nvd.nist.gov/vuln/detail/CVE-2021-20124

Related News Articles

• CISA Warns of Sitecore RCE Flaws; Active Exploits Hit Next.js and DrayTek DevicesMarch 27, 2025
• GeoServer Vulnerability Targeted by Hackers to Deliver Backdoors and Botnet MalwareSeptember 6, 2024

Related Weaknesses

• CWE-22