CVE-2023-35136

Summary

CVE-2023-35136 is a newly disclosed input validation vulnerability affecting multiple Zyxel firmware versions. Specifically, the "Quagga" package in ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, and VPN series devices is the targeted component. An authenticated local attacker can exploit this flaw to gain unauthorized access to configuration files, potentially leading to sensitive data exposure or unintended system changes. This vulnerability poses a significant risk and requires immediate attention from affected organizations, as successful exploitation does not require any advanced skills or tools. Users are strongly advised to update their devices to the latest software versions to mitigate this threat.

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