CVE-2021-20125 — CRITICAL (9.8)

Vulnerability 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 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Draytek	Vigorconnect	1.6.0

Related Weaknesses (CWE)

CWE-22 CWE-434

References

https://www.tenable.com/security/research/tra-2021-42ExploitThird Party Advisory
https://www.tenable.com/security/research/tra-2021-42ExploitThird Party Advisory

FAQ

What is CVE-2021-20125?

CVE-2021-20125 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 levera...

How severe is CVE-2021-20125?

CVE-2021-20125 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-20125?

Check the references section above for vendor advisories and patch information. Affected products include: Draytek Vigorconnect.