What’s Vulnerable › Vulnerabilities

CVE-2021-20125

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-13 · updated 2026-06-17
• Weakness: CWE-22

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.

Affected products

• Draytek VigorConnect: 1.6.0-beta3

References

• https://www.tenable.com/security/research/tra-2021-42
• https://www.tenable.com/security/research/tra-2021-42

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