CVE-2021-20123

7.5 HIGH CISA KEV - Actively Exploited
Published: October 13, 2021 Modified: November 03, 2025
View on 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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://www.tenable.com/security/research/tra-2021-42
Source: vulnreport@tenable.com
Exploit Third Party Advisory
https://www.tenable.com/security/research/tra-2021-42
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20123
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
94.0%
100th percentile
Exploitation Status
Actively Exploited
Remediation due: 2024-09-24

Weaknesses (CWE)

CWE-22 CWE-22

Affected Vendors

draytek

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