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TI-2021-03428 Aliases CVE-2021-20128GHSA-vj36-fv2g-fcfx

Cross-site scripting in Draytek VigorConnect

Priority LOW 25CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

EPSS 0.00569 47th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Draytek VigorConnect1.6.0-B3—No fix listedCNA
  • Draytek VigorConnect Vendor— Affected 1.6.0-B3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:draytek:vigorconnect:1.6.0:beta3:*:*:*:*:*:*1.6.0 beta3VulnerableDrayTek
  • cpe:2.3:a:draytek:vigorconnect:1.6.0:beta3:*:*:*:*:*:* Versions 1.6.0 beta3 Vulnerable ·DrayTek

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-20128
  2. 2026-10-03 Alias added: GHSA-vj36-fv2g-fcfx

References

Exploit 1

  • TI-2021-03424 Path traversal in Draytek VigorConnect KEVCVSS 3.1HIGH 7.5
  • TI-2021-03423 Path traversal in Draytek VigorConnect KEVCVSS 3.1HIGH 7.5
  • TI-2021-03425 Path traversal in Draytek VigorConnect CVSS 3.1CRITICAL 9.8
  • TI-2021-03426 Cross-site request forgery in Draytek VigorConnect CVSS 3.1HIGH 8.8
  • TI-2021-03427 An arbitrary file deletion vulnerability exists in the file delete functionality of the… CVSS 3.1HIGH 8.1
  • TI-2021-03429 Sensitive information in log files in Draytek VigorConnect CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences