Path traversal in VigorConnect - CVE-2021-20124
Published: September 3, 2024
Vulnerability identifier: #VU96749
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Amber
CVE-ID: CVE-2021-20124
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: DrayTek Corp.
Affected software:
VigorConnect
VigorConnect
Detailed vulnerability description
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in the file download functionality of the WebServlet endpoint. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.
How to mitigate CVE-2021-20124
Install update from vendor's website.