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Hardware manufacturer Zyxel has issued patches for a highly critical security flaw that gives malicious hackers the ability to take control of a wide range of firewalls and VPN products the company sells to businesses.
The flaw is an authentication bypass vulnerability that stems from a lack of a proper access-control mechanism in the CGI (common gateway interface) of affected devices, the company said. Access control refers to a set of policies that rely on passwords and other forms of authentication to ensure resources or data are available only to authorized people. The vulnerability is tracked as CVE-2022-0342.
“The flaw could allow an attacker to bypass the authentication and obtain administrative access of the device,” Zyxel said in an advisory. The severity rating is 9.8 out of a possible 10.
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