CVE-2021-20124
· published 2021-10-13
Source record Collected from the National Vulnerability Database (NVD)
CISA Known Exploited Vulnerabilities
CISA lists this CVE as known exploited (added 2024-09-03).
- CISA's name for it: Draytek VigorConnect Path Traversal Vulnerability
- CISA's description: Draytek VigorConnect contains a path traversal vulnerability 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.
- Known ransomware campaign use, per CISA: Unknown
Source: CISA KEV catalog (CC0 1.0).
Description
Description by Tenable Network Security, Inc. via the CVE Program.
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.
Status at the source
- NVD status: Analyzed
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| n/a | Draytek VigorConnect | 1.6.0-B3: affected |
Added by CISA-ADP (Authorized Data Publisher)
| Vendor | Product | Versions |
|---|---|---|
| draytek | vigorconnect | 1.6.0: affected |
Products named in NVD's CPE match criteria (1)
cpe:2.3:a:draytek:vigorconnect:1.6.0:beta3:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 7.5 HIGH — as published by NIST (Primary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 3.1: 7.5 HIGH — as published by CISA-ADP (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0: 7.8 HIGH — as published by NIST (Primary)
AV:N/AC:L/Au:N/C:C/I:N/A:N - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: active · Automatable: yes · Technical impact: partial
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://www.tenable.com/security/research/tra-2021-42
- https://www.tenable.com/security/research/tra-2021-42
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20124
Source dates: published 2021-10-13, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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