CVE-2021-20124KEV · OVERDUE

Draytek VigorConnect Path Traversal Vulnerability

High · published October 13, 2021

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 7.5. It is confirmed in active exploitation. It sits in the 99.9th percentile for exploit probability.

759
days past CISA
deadline
CVSS v3.1
7.5
EPSS
96%
Percentile
99.9
In the wild
Confirmed
What it is

🚨 An unauthenticated attacker could download any file on your system with root privileges — talk about a recipe for disaster! 🔥 Think of this like a restaurant's kitchen door left wide open, allowing anyone to waltz in and grab any recipe or ingredient they want. This vulnerability lets attackers stroll right into your system and pilfer sensitive files! An attacker could exploit this vulnerability to access files they shouldn't, potentially exposing sensitive information or critical configuration files. If you're running Draytek VigorConnect 1.6.0-B3, this could lead to catastrophic data breaches or the manipulation of key system settings. It's absolutely concerning!

Put simply

Think of this like a restaurant's kitchen door left wide open, allowing anyone to waltz in and grab any recipe or ingredient they want. This vulnerability lets attackers stroll right into your system and pilfer sensitive files! This local file inclusion vulnerability in the WebServlet endpoint allows attackers to download arbitrary files from the server's filesystem without any authentication, effectively granting them root access to the system's files.

What to do

An attacker could exploit this vulnerability to access files they shouldn't, potentially exposing sensitive information or critical configuration files. If you're running Draytek VigorConnect 1.6.0-B3, this could lead to catastrophic data breaches or the manipulation of key system settings. It's absolutely concerning! Immediately update Draytek VigorConnect to the patched version that addresses this vulnerability. Check your configuration to ensure proper access controls are in place, and consider implementing additional security measures like firewalls. Don't forget to audit your system for any unauthorized access! You've got this! Take these steps and you'll be well on your way to locking down your systems. 🛡️

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.96308 · 99.9th percentile
Published
2021-10-13T15:48Z
KEV added
2024-09-03 · due 2024-09-24
EPSS history
Timeline
  • 25 AUG 00:00Z
    EPSS moved 71% → 96%
    epss
  • 03 SEP 00:00Z
    Added to CISA KEV — remediate by Sep 24
    kev
  • 13 OCT 15:48Z
    A local file inclusion vulnerability exists in Draytek VigorConnect 1.6.0-B3 in the file download functionality of the WebServlet endpoint
    cvelistv5