Is CVE-2021-20124 actively exploited?

Yes. CVE-2021-20124 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2021-20124 be exploited remotely?

The attack vector of CVE-2021-20124 has not been classified yet.

What is the CVSS score of CVE-2021-20124?

CVE-2021-20124 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2021-20124

HIGHCISA KEVIN THE WILD

CVE-2021-20124

Published: September 3, 2024

EPSS:94.06%probability of exploitation in 30 daysPercentile:99.9th

Official Description

Draytek VigorConnect contains a path traversal vulnerability in the file download functionality of the WebServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges.

NVD Source

CISA KEV Advisory

Draytek VigorConnect Path Traversal Vulnerability

Added to KEV: 2024-09-03Federal patch deadline: 2024-09-24

Required Action (CISA)

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Risk Analysis

Draytek VigorConnect has a path traversal vulnerability in its WebServlet endpoint's file download functionality. An unauthenticated attacker can exploit this to download arbitrary files from the underlying operating system with root privileges. The high EPSS score of 0.94059 indicates a very high likelihood of exploitation.

This vulnerability has been actively exploited in the wild and is included in CISA's KEV catalog, confirming its real-world impact. It is remotely exploitable without authentication.

Recommended Action

Organizations should apply available patches or upgrades for Draytek VigorConnect to address this path traversal vulnerability and restrict access to the WebServlet endpoint.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2021-20124 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2021-20124 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.