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

Source: https://junglewise.ai/threats/cve-2021-20124-draytek-vigorconnect-path-traversal-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2024-09-03. Updated: 2026-05-09  
License: CC BY 4.0 with a link back

CVE-2021-20124 · Severity: critical · CVSS 7.5 · Exploited in the wild · Published 2024-09-03

DrayTek VigorConnect contains a path traversal vulnerability in the WebServlet endpoint's file download functionality. An unauthenticated remote attacker can exploit this to download arbitrary files from the underlying operating system with root privileges.

Vendors: [DrayTek](https://junglewise.ai/threats/vendors/draytek).

## Quick answers

**Is CVE-2021-20124 exploited in the wild?** Yes. CVE-2021-20124 is known to be exploited in the wild, first recorded on 3 September 2024. Treat it as urgent.

**How severe is CVE-2021-20124?** Critical severity, with a CVSS score of 7.5, published 3 September 2024.

**Which products and versions are affected?** DrayTek VigorConnect 1.6.0-B3.

**Is there a fix for CVE-2021-20124?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2021-20124 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2021-20124?** Check whether you run DrayTek VigorConnect. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- DrayTek VigorConnect 1.6.0-B3

## Timeline

- 2021-10-13: disclosed
- 2024-09-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2024-09-03: exploited

## Related threats

- [Draytek VigorConnect Path Traversal Vulnerability](https://junglewise.ai/threats/cve-2021-20123-draytek-vigorconnect-path-traversal-vulnerability)