CVE-2021-20124 | BDVDB-2026-162421 Detail

Draytek VigorConnect

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

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

References#

Exploit#

No public exploit known

History#

Version 12021-10-13Record published in the CVE List.
Version 22025-10-21Most recent update recorded in the CVE List.

Published

Published: 2021-10-13
Last modified: 2025-10-21

Vendor information

Vendor: Not stated
Product: Draytek VigorConnect

Score

7.5 High

EPSS

95.9%, Very High

Estimated chance of exploitation in the next 30 days. EPSS percentile: 99.9.

KEV

Yes

Listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Path Traversal

Action

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

Affected Systems

Vulnerable
1.6.0-B3
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.5 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	None
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).