CVE-2021-20125

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

An arbitrary file upload and directory traversal vulnerability exists in the file upload functionality of DownloadFileServlet in Draytek VigorConnect 1.6.0-B3. An unauthenticated attacker could leverage this vulnerability to upload files to any location on the target operating system with root privileges.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-22CWE-434

Affected software

No affected versions have been published.

Timeline

Published
Oct 13, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-201268.8Draytek VigorConnect 1.6.0-B3 lacks cross-site request forgery protections and does not sufficiently verify whether a well-formed, valid, coCVE-2021-201278.1An arbitrary file deletion vulnerability exists in the file delete functionality of the Html5Servlet endpoint of Draytek VigorConnect 1.6.0-CVE-2021-201285.4The Profile Name field in the floor plan (Network Menu) page in Draytek VigorConnect 1.6.0-B3 was found to be vulnerable to stored XSS, as uCVE-2021-201297.5An information disclosure vulnerability exists in Draytek VigorConnect 1.6.0-B3, allowing an unauthenticated attacker to export system logs.CVE-2021-20137.6Vulnerability in the Oracle BI Publisher product of Oracle Fusion Middleware (component: BI Publisher Security). Supported versions that areCVE-2021-201308.8ManageEngine ADManager Plus Build 7111 contains a post-authentication remote code execution vulnerability due to improperly validated file uCVE-2021-201318.8ManageEngine ADManager Plus Build 7111 contains a post-authentication remote code execution vulnerability due to improperly validated file uCVE-2021-201328.8Quagga Services on D-Link DIR-2640 less than or equal to version 1.11B02 use default hard-coded credentials, which can allow a remote attackCVE-2021-201336.1Quagga Services on D-Link DIR-2640 less than or equal to version 1.11B02 are affected by an absolute path traversal vulnerability that allowCVE-2021-201348.4Quagga Services on D-Link DIR-2640 less than or equal to version 1.11B02 are affected by an absolute path traversal vulnerability that allowCVE-2021-201356.7Nessus versions 8.15.2 and earlier were found to contain a local privilege escalation vulnerability which could allow an authenticated, locaCVE-2021-201369.8ManageEngine Log360 Builds < 5235 are affected by an improper access control vulnerability allowing database configuration overwrite. An una
CVE-2021-20125: Critical severity, CVSS 9.8 | Vulnix