{"api_version":"1","generated_at":"2026-04-21T14:06:11+00:00","cve":"CVE-2023-33010","urls":{"html":"https://cve.report/CVE-2023-33010","api":"https://cve.report/api/cve/CVE-2023-33010.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-33010","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-33010"},"summary":{"title":"Zyxel Multiple Firewalls Buffer Overflow Vulnerability","description":"A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected 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Firewalls","vulnerabilityName":"Zyxel Multiple Firewalls Buffer Overflow Vulnerability","dateAdded":"2023-06-05","shortDescription":"Zyxel ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, and ZyWALL/USG firewalls contain a buffer overflow vulnerability in the ID processing function that could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and remote code execution on an affected device.","requiredAction":"Apply updates per vendor instructions.","dueDate":"2023-06-26","knownRansomwareCampaignUse":"Unknown","notes":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls;  https://nvd.nist.gov/vuln/detail/CVE-2023-33010","cwes":"CWE-120","catalogVersion":"2026.04.21","updated_at":"2026-04-21 13:32:18"},"epss":{"cve_year":"2023","cve_id":"33010","cve":"CVE-2023-33010","epss":"0.058530000","percentile":"0.905690000","score_date":"2026-04-20","updated_at":"2026-04-21 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5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device."}]}},"nvd":{"publishedDate":"2023-05-24 13:15:00","lastModifiedDate":"2023-06-07 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