Critical severity · published Oct 13, 2021
CVE-2021-20125
An arbitrary file upload and directory traversal vulnerability exists in the file upload functionality of DownloadFileServlet in Draytek VigorConnect 1.6.0-B3
9.8
CVSS
3.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.9% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VI
Vigorconnect · Draytek
1.6.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20125
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20125
Exploit
https://www.tenable.com/security/research/tra-2021-42
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