CVE-2021-20123

nvd nist nuclei

Published: Oct 13, 2021Modified: Nov 3, 2025CISA KEV

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

A local file inclusion vulnerability exists in Draytek VigorConnect 1.6.0-B3 in the file download functionality of the DownloadFileServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges.

Affected (1)

Products: Draytek: Vigorconnect

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Draytek Vigorconnect	Version 1.6.0 beta3

Related CWEs

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (3)

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

Source: vulnreport@tenable.com

ExploitThird Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20123

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

Timeline

No history available yet.