# CVE-2021-20124: Draytek VigorConnect Path Traversal Vulnerability 

> CVE-2021-20124: Draytek VigorConnect Path Traversal Vulnerability . CVSS 7.5 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2021-20124
Last updated: 2025-10-21T23:25:28Z

- Published: 2021-10-13 15:48 UTC · Updated: 2025-10-21 23:25 UTC · Assigner: tenable
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS: 95.9%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2024-09-03, federal due date 2024-09-24, ransomware use: Unknown

## Description

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

## CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

## Affected vendors and products

- draytek: vigorconnect
- n/a: Draytek VigorConnect

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-20124)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2021-20124)
- [https://www.tenable.com/security/research/tra-2021-42](https://www.tenable.com/security/research/tra-2021-42)

---

_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


---
Canonical: https://rewindex.com/cve/CVE-2021-20124 · Markdown: https://rewindex.com/cve/CVE-2021-20124.md · JSON: https://rewindex.com/api/v1/cves/CVE-2021-20124 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T04:04:10.812Z