VULNERABILITY INTELLIGENCE

CVE-2021-20123

CVSS score7.5 HIGH

EPSS probability89.65%

CISA KEVKnown exploited vulnerability

Published2021-10-13

Last modified2026-06-17

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

Known Exploited Vulnerability

Draytek VigorConnect Path Traversal Vulnerability

Vendor / product: DrayTek / VigorConnect

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.

Weakness classification

nvd@nist.gov: CWE-22
134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-22

Primary references

vulnreport@tenable.com — Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0 — US Government Resource