CVE-2021-20123 — HIGH (7.5)

Vulnerability Description

A local file inclusion vulnerability exists in Draytek VigorConnect 1.6.0-B3 in the file download functionality of the DownloadFileServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Draytek	Vigorconnect	1.6.0

Related Weaknesses (CWE)

CWE-22

References

https://www.tenable.com/security/research/tra-2021-42ExploitThird Party Advisory
https://www.tenable.com/security/research/tra-2021-42ExploitThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-US Government Resource

FAQ

What is CVE-2021-20123?

CVE-2021-20123 is a vulnerability with a CVSS score of 7.5 (HIGH). A local file inclusion vulnerability exists in Draytek VigorConnect 1.6.0-B3 in the file download functionality of the DownloadFileServlet endpoint. An unauthenticated attacker could leverage this vul...

How severe is CVE-2021-20123?

CVE-2021-20123 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20123?

Check the references section above for vendor advisories and patch information. Affected products include: Draytek Vigorconnect.