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Vulnerabilities CVE-2022-50994

CVE-2022-50994

Critical
Open
TLP:CLEAR

DrayTek Vigor 2960 < 1.5.1.4 OS Command Injection via mainfunction.cgi

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Description

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.

Details

CVSS Score
9.2
EPSS Score
1.43%

70.7th percentile

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
Confidence
90%
Published
May 8, 2026
Last Modified
Jul 15, 2026
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