CVE-2021-20123

State: Published
Severity: 7.5 High
Published: Oct 13, 2021
Updated: Oct 21, 2025
Reserved: Dec 17, 2020

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	CISA-ADP

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected Products

Product	Versions
Draytek VigorConnectn/a	1.6.0-B3Affected

References

https://www.tenable.com/security/research/tra-2021-42
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20123government-resource

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