← Vulnerability feed

Vulnerability record · CVE-2021-20128 · published 13 October 2021

CVE-2021-20128: Draytek vigorconnect cross-site scripting vulnerability

Draytek · Vigorconnect

The 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 user input is not properly sanitized.

5.4 CVSS 3.1 Medium EPSS 0.57% · top 55.1% CWE-79 · Cross-site scripting
5.4CVSS 3.1 base score, v2 3.5
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The 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 user input is not properly sanitized.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.tenable.com/security/research/tra-2021-42 ExploitThird Party Advisory
https://www.tenable.com/security/research/tra-2021-42 ExploitThird Party Advisory

Track CVE-2021-20128 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2021-20123Draytek VigorConnect path traversal in DownloadFileServletDraytek VigorConnect 1.6.0-B3 contains a path traversal (local file inclusion) flaw in the file download functionality of the DownloadFileServlet end…KEVEPSS 90%analysed7.5CVE-2021-20124Draytek VigorConnect path traversal allows unauthenticated file downloadDraytek VigorConnect 1.6.0-B3 contains a path traversal (local file inclusion) flaw in the file download functionality of the WebServlet endpoint. An…KEVEPSS 96%analysed9.8CVE-2021-20125Draytek vigorconnect path traversal vulnerabilityAn arbitrary file upload and directory traversal vulnerability exists in the file upload functionality of DownloadFileServlet in Draytek VigorConnect…EPSS 3.9%8.8CVE-2021-20126Draytek vigorconnect cross-site request forgery vulnerabilityDraytek VigorConnect 1.6.0-B3 lacks cross-site request forgery protections and does not sufficiently verify whether a well-formed, valid, consistent …EPSS 0.63%8.1CVE-2021-20127Draytek vigorconnect vulnerabilityAn arbitrary file deletion vulnerability exists in the file delete functionality of the Html5Servlet endpoint of Draytek VigorConnect 1.6.0-B3. This …EPSS 1.1%7.5CVE-2021-20129Draytek vigorconnect sensitive information in log file vulnerabilityAn information disclosure vulnerability exists in Draytek VigorConnect 1.6.0-B3, allowing an unauthenticated attacker to export system logs.EPSS 1.7%6.1CVE-2026-42897Microsoft Exchange Server XSS enables spoofingMicrosoft Exchange Server and Exchange Server Subscription Edition fail to neutralize input during web page generation, a cross-site scripting flaw (…KEVEPSS 0.52%analysed6.1CVE-2025-48700Zimbra Classic UI stored XSS via crafted email HTMLZimbra Collaboration Suite Classic UI fails to properly sanitize HTML content in email messages, allowing crafted tag structures and attribute values…KEVEPSS 1.7%analysed

Source: NIST National Vulnerability Database (record CVE-2021-20128), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.