CVE-2021-20124
Draytek VigorConnect Path Traversal Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 24 September 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
A local file inclusion vulnerability exists in Draytek VigorConnect 1.6.0-B3 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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 95.92% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 3 September 2024 · due 24 September 2024
- Weakness
- CWE-22
- Affected
- draytek/vigorconnect
- Source
- vulnreport@tenable.com
EPSS 95.9% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://www.draytek.com/about/security-advisory/vigorconnect-software-security-vulnerability-(cve-2021-20123-cve-2021-20129); https://nvd.nist.gov/vuln/detail/CVE-2021-20124
References
- https://www.tenable.com/security/research/tra-2021-42Exploit, Third Party Advisory
- https://www.tenable.com/security/research/tra-2021-42Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20124US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.