CVE-2023-33011
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk22th percentile - higher than 22% of all known CVEs
Summary
A format string vulnerability in the Zyxel ATP, USG FLEX, USG20(W)-VPN, and VPN series firmware could allow an unauthenticated, LAN-based attacker to execute OS commands using a crafted PPPoE configuration when cloud management mode is enabled.
Risk Assessment
This vulnerability poses a risk of unauthorized access to the system, potentially leading to serious security breaches within the organization.
Recommendation
It is recommended to update the firmware to the latest version to mitigate this vulnerability and to disable cloud management mode if it is not necessary.
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Original NVD description (English source)
A format string vulnerability in the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN series firmware versions 5.00 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands by using a crafted PPPoE configuration on an affected device when the cloud management mode is enabled.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

