What is CVE-2021-20126?

CVE-2021-20126 is a high-severity vulnerability in Draytek Vigorconnect, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-10-13.

How severe is CVE-2021-20126?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2021-20126 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

CSRF in Draytek Vigorconnect

CVE-2021-20126

Draytek VigorConnect 1.6.0-B3 lacks cross-site request forgery protections and does not sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.006 (45.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Draytek Vigorconnect — versions 1.6.0
N/a Draytek Vigorconnect — versions 1.6.0-B3

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

Public proof-of-concept exploits

References

vulnreport@tenable.com (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-20126?: CVE-2021-20126 is a high-severity vulnerability in Draytek Vigorconnect, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-10-13.
How severe is CVE-2021-20126?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2021-20126 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.