CVE-2022-50994 CRITICAL

CVE-2022-50994: DrayTek Vigor 2960 < 1.5.1.4 OS Command Injection via mainfunction.cgi

Vendor Draytek
Product Vigor 2960
Weakness CWE-78
Published May 8, 2026
Last update May 8, 2026

CVSS base score

9.2/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

DrayTek Vigor 2960 firmware versions prior to 1.5.1.4 contain an OS command injection vulnerability in the CGI login handler that allows unauthenticated remote attackers to execute arbitrary commands by injecting shell metacharacters into the formpassword parameter. Attackers can exploit unsanitized input passed to the otp_check.sh script to achieve remote code execution with web server privileges. Exploitation requires knowledge of a valid username and that the target account has MOTP authentication enabled.

Key dates

02Disclosure timeline

May 8, 2026 CVE published
May 8, 2026 Record updated