[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fMqyXQ5e5tu1UmZPCNqJeb7WNFsDYoZVC6qJUp6OVBi0":3,"g5a-family:zyxel\u002Fusg_20w-vpn_firmware":119,"g5a-ex:zyxel\u002Fusg_20w-vpn_firmware@*":120},{"success":4,"data":5},true,{"product":6,"versions":27,"topVulnerabilitiesByEpss":33,"kevVulnerabilities":89,"seoMetadata":97,"meta":116},{"vendorName":7,"productName":8,"versionCount":9,"totalCves":10,"kevCount":11,"lastCveUpdate":12,"versions":13,"description":26},"zyxel","usg_20w-vpn_firmware",5,19,2,"2023-07-17",[14,18,20,22,24],{"version":15,"cve_count":16,"kev_count":16,"has_kev":17},"4.16",0,false,{"version":19,"cve_count":16,"kev_count":16,"has_kev":17},"4.60",{"version":21,"cve_count":16,"kev_count":16,"has_kev":17},"5.00",{"version":23,"cve_count":11,"kev_count":11,"has_kev":4},"5.36",{"version":25,"cve_count":16,"kev_count":16,"has_kev":17},"5.37","Usg 20w-vpn Firmware by Zyxel is a technology product with 5 tracked versions and 19 known security vulnerabilities including 2 CISA Known Exploited Vulnerabilities. Get comprehensive security analysis, vulnerability tracking, and threat intelligence for this product.",[28,29,30,31,32],{"version":15,"cve_count":16,"kev_count":16,"has_kev":17},{"version":19,"cve_count":16,"kev_count":16,"has_kev":17},{"version":21,"cve_count":16,"kev_count":16,"has_kev":17},{"version":23,"cve_count":11,"kev_count":11,"has_kev":4},{"version":25,"cve_count":16,"kev_count":16,"has_kev":17},[34,42,46,52,59,64,68,73,78,85],{"cveId":35,"description":36,"publishedDate":37,"cvssScore":38,"cvssVersion":39,"severity":40,"isKev":4,"epssScore":41},"CVE-2023-33010","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\u002FUSG 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.","2023-05-24",9.8,"v3.1","Critical",0.29024,{"cveId":43,"description":44,"publishedDate":37,"cvssScore":38,"cvssVersion":39,"severity":40,"isKev":4,"epssScore":45},"CVE-2023-33009","A buffer overflow vulnerability in the notification function in Zyxel ATP series firmware versions 4.60 through 5.36 Patch 1, USG FLEX series firmware versions 4.60 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.60 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.60 through 5.36 Patch 1, VPN series firmware versions 4.60 through 5.36 Patch 1, ZyWALL\u002FUSG series firmware versions 4.60 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.\n\n",0.28144,{"cveId":47,"description":48,"publishedDate":12,"cvssScore":49,"cvssVersion":39,"severity":50,"isKev":17,"epssScore":51},"CVE-2023-33012","A command injection vulnerability in the configuration parser of 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 GRE configuration when the cloud management mode is enabled.",8.8,"High",0.09882,{"cveId":53,"description":54,"publishedDate":55,"cvssScore":56,"cvssVersion":39,"severity":57,"isKev":17,"epssScore":58},"CVE-2022-0734","A cross-site scripting vulnerability was identified in the CGI program of Zyxel USG\u002FZyWALL series firmware versions 4.35 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.35 through 5.20, and VPN series firmware versions 4.35 through 5.20, that could allow an attacker to obtain some information stored in the user's browser, such as cookies or session tokens, via a malicious script.","2022-05-24",6.1,"Medium",0.09402,{"cveId":60,"description":61,"publishedDate":55,"cvssScore":62,"cvssVersion":39,"severity":50,"isKev":17,"epssScore":63},"CVE-2022-26531","Multiple improper input validation flaws were identified in some CLI commands of Zyxel USG\u002FZyWALL series firmware versions 4.09 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series firmware versions 4.32 through 5.21, VPN series firmware versions 4.30 through 5.21, NSG series firmware versions 1.00 through 1.33 Patch 4, NXC2500 firmware version 6.10(AAIG.3) and earlier versions, NAP203 firmware version 6.25(ABFA.7) and earlier versions, NWA50AX firmware version 6.25(ABYW.5) and earlier versions, WAC500 firmware version 6.30(ABVS.2) and earlier versions, and WAX510D firmware version 6.30(ABTF.2) and earlier versions, that could allow a local authenticated attacker to cause a buffer overflow or a system crash via a crafted payload.",7.8,0.06175,{"cveId":65,"description":66,"publishedDate":55,"cvssScore":62,"cvssVersion":39,"severity":50,"isKev":17,"epssScore":67},"CVE-2022-26532","A argument injection vulnerability in the 'packet-trace' CLI command of Zyxel USG\u002FZyWALL series firmware versions 4.09 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series firmware versions 4.32 through 5.21, VPN series firmware versions 4.30 through 5.21, NSG series firmware versions 1.00 through 1.33 Patch 4, NXC2500 firmware version 6.10(AAIG.3) and earlier versions, NAP203 firmware version 6.25(ABFA.7) and earlier versions, NWA50AX firmware version 6.25(ABYW.5) and earlier versions, WAC500 firmware version 6.30(ABVS.2) and earlier versions, and WAX510D firmware version 6.30(ABTF.2) and earlier versions, that could allow a local authenticated attacker to execute arbitrary OS commands by including crafted arguments to the CLI command.",0.04829,{"cveId":69,"description":70,"publishedDate":71,"cvssScore":49,"cvssVersion":39,"severity":50,"isKev":17,"epssScore":72},"CVE-2023-27991","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.","2023-04-24",0.01453,{"cveId":74,"description":75,"publishedDate":71,"cvssScore":76,"cvssVersion":39,"severity":50,"isKev":17,"epssScore":77},"CVE-2023-22915","A buffer overflow vulnerability in the “fbwifi_forward.cgi” CGI program of Zyxel USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.30 through 5.35, USG20(W)-VPN firmware versions 4.30 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow a remote unauthenticated attacker to cause DoS conditions by sending a crafted HTTP request if the Facebook WiFi function were enabled on an affected device.",7.5,0.01054,{"cveId":79,"description":80,"publishedDate":81,"cvssScore":82,"cvssVersion":83,"severity":57,"isKev":17,"epssScore":84},"CVE-2018-9129","ZyXEL ZyWALL\u002FUSG series devices have a Bleichenbacher vulnerability in their Internet Key Exchange (IKE) handshake implementation used for IPsec based VPN connections.","2018-08-15",5.9,"v3.0",0.00965,{"cveId":86,"description":87,"publishedDate":71,"cvssScore":76,"cvssVersion":39,"severity":50,"isKev":17,"epssScore":88},"CVE-2023-22917","A buffer overflow vulnerability in the “sdwan_iface_ipc” binary of Zyxel ATP series firmware versions 5.10 through 5.32, USG FLEX series firmware versions 5.00 through 5.32, USG FLEX 50(W) firmware versions 5.10 through 5.32, USG20(W)-VPN firmware versions 5.10 through 5.32, and VPN series firmware versions 5.00 through 5.35, which could allow a remote unauthenticated attacker to cause a core dump with a request error message on a vulnerable device by uploading a crafted configuration file.",0.00879,[90,95],{"cveId":43,"description":44,"publishedDate":37,"cvssScore":38,"severity":40,"isKev":4,"epssScore":45,"cisaVulnName":91,"cisaDateAdded":92,"cisaShortDescription":93,"cisaRequiredAction":94},"Zyxel Multiple Firewalls Buffer Overflow Vulnerability","2023-06-05","Zyxel ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, and ZyWALL\u002FUSG firewalls contain a buffer overflow vulnerability in the notification function that could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and remote code execution on an affected device.","Apply updates per vendor instructions.",{"cveId":35,"description":36,"publishedDate":37,"cvssScore":38,"severity":40,"isKev":4,"epssScore":41,"cisaVulnName":91,"cisaDateAdded":92,"cisaShortDescription":96,"cisaRequiredAction":94},"Zyxel ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, and ZyWALL\u002FUSG 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.",{"title":98,"metaDescription":99,"keywords":100,"structuredData":101},"Usg 20w-vpn Firmware by Zyxel - Security Vulnerabilities & Analysis | Precursor Intelligence","Comprehensive security analysis for Usg 20w-vpn Firmware by Zyxel covering 5 versions with 19 tracked vulnerabilities including 2 critical and 0 high-severity issues and 2 CISA KEV vulnerabilities. Real-time threat intelligence, CVE tracking, and security recommendations.","Usg 20w-vpn Firmware vulnerabilities, Usg 20w-vpn Firmware security, Usg 20w-vpn Firmware CVE, Zyxel Usg 20w-vpn Firmware, Usg 20w-vpn Firmware threat intelligence, Zyxel security, product security analysis, cybersecurity threats, vulnerability management, CVE tracking, Usg 20w-vpn Firmware KEV, Usg 20w-vpn Firmware exploited vulnerabilities",{"@context":102,"@type":103,"name":104,"description":99,"url":105,"manufacturer":106,"applicationCategory":110,"softwareVersion":111,"mainEntity":112},"https:\u002F\u002Fschema.org","SoftwareApplication","Usg 20w-vpn Firmware","https:\u002F\u002Fprecursorintelligence.com\u002Fvulnerabilities\u002Ftechnologies\u002Fvendors\u002Fzyxel\u002Fusg_20w-vpn_firmware",{"@type":107,"name":108,"url":109},"Organization","Zyxel","https:\u002F\u002Fprecursorintelligence.com\u002Fvendors\u002Fzyxel","Security Software","5 versions tracked",{"@type":113,"name":114,"description":115,"vulnerabilityCount":10,"dateModified":12},"SecurityVulnerability","Usg 20w-vpn Firmware Security Vulnerabilities","Security vulnerabilities affecting Usg 20w-vpn Firmware by Zyxel",{"totalVersions":9,"totalVulnerabilities":10,"kevVulnerabilities":11,"lastUpdated":12,"generatedAt":117,"apiVersion":118},"2026-10-18T19:56:44.587Z","3.0",[],{"rows":121,"total":11,"capped":17,"failed":16},[122,128],{"cveId":43,"name":91,"severity":40,"cvss":38,"added":92,"epss":45,"published":123,"ranges":124,"checked":4,"hits":127,"covers":17},"2023-05-24T13:15:09.56",[125,23,126],"4.60 to before 5.36","5.36-patch1",[],{"cveId":35,"name":91,"severity":40,"cvss":38,"added":92,"epss":41,"published":129,"ranges":130,"checked":4,"hits":131,"covers":17},"2023-05-24T13:15:09.64",[23,126],[]]