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The post-authentication command injection vulnerability in the CLI command of Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.16 through 5.35, USG20(W)-VPN firmware versions 4.16 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow an authenticated attacker to execute some OS commands remotely.
Use CWE-78, Zyxel vendor hub and Atp200 Firmware product page to widen CVE-2023-27991 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2023-33010, CVE-2023-33009 and CVE-2023-28771 for nearby disclosures in the same product family.