[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fHoQEwsQmWInDVVRHkEbvGAPbiiA7y-vTpWK5qp9dqqQ":3,"g5a-family:zyxel\u002Fatp500":129,"g5a-ex:zyxel\u002Fatp500@*":133},{"success":4,"data":5},true,{"product":6,"versions":15,"topVulnerabilitiesByEpss":16,"kevVulnerabilities":74,"seoMetadata":107,"meta":126},{"vendorName":7,"productName":8,"versionCount":9,"totalCves":10,"kevCount":11,"lastCveUpdate":12,"versions":13,"description":14},"zyxel","atp500",0,43,7,"2025-10-21",[],"Atp500 by Zyxel is a technology product and 43 known security vulnerabilities including 7 CISA Known Exploited Vulnerabilities. Get comprehensive security analysis, vulnerability tracking, and threat intelligence for this product.",[],[17,25,30,35,41,46,51,55,63,68],{"cveId":18,"description":19,"publishedDate":20,"cvssScore":21,"cvssVersion":22,"severity":23,"isKev":4,"epssScore":24},"CVE-2020-9054","Multiple ZyXEL network-attached storage (NAS) devices running firmware version 5.21 contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable device. ZyXEL NAS devices achieve authentication by using the weblogin.cgi CGI executable. This program fails to properly sanitize the username parameter that is passed to it. If the username parameter contains certain characters, it can allow command injection with the privileges of the web server that runs on the ZyXEL device. Although the web server does not run as the root user, ZyXEL devices include a setuid utility that can be leveraged to run any command with root privileges. As such, it should be assumed that exploitation of this vulnerability can lead to remote code execution with root privileges. By sending a specially-crafted HTTP POST or GET request to a vulnerable ZyXEL device, a remote, unauthenticated attacker may be able to execute arbitrary code on the device. This may happen by directly connecting to a device if it is directly exposed to an attacker. However, there are ways to trigger such crafted requests even if an attacker does not have direct connectivity to a vulnerable devices. For example, simply visiting a website can result in the compromise of any ZyXEL device that is reachable from the client system. Affected products include: NAS326 before firmware V5.21(AAZF.7)C0 NAS520 before firmware V5.21(AASZ.3)C0 NAS540 before firmware V5.21(AATB.4)C0 NAS542 before firmware V5.21(ABAG.4)C0 ZyXEL has made firmware updates available for NAS326, NAS520, NAS540, and NAS542 devices. Affected models that are end-of-support: NSA210, NSA220, NSA220+, NSA221, NSA310, NSA310S, NSA320, NSA320S, NSA325 and NSA325v2","2020-03-04",9.8,"v3.1","Critical",0.99988,{"cveId":26,"description":27,"publishedDate":28,"cvssScore":21,"cvssVersion":22,"severity":23,"isKev":4,"epssScore":29},"CVE-2022-30525","A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware versions 5.00 through 5.21 Patch 1, USG FLEX 200 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 500 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 700 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 50(W) firmware versions 5.10 through 5.21 Patch 1, USG20(W)-VPN firmware versions 5.10 through 5.21 Patch 1, ATP series firmware versions 5.10 through 5.21 Patch 1, VPN series firmware versions 4.60 through 5.21 Patch 1, which could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.","2022-05-12",0.99944,{"cveId":31,"description":32,"publishedDate":33,"cvssScore":21,"cvssVersion":22,"severity":23,"isKev":4,"epssScore":34},"CVE-2023-28771","Improper error message handling in Zyxel ZyWALL\u002FUSG series firmware versions 4.60 through 4.73, VPN series firmware versions 4.60 through 5.35, USG FLEX series firmware versions 4.60 through 5.35, and ATP series firmware versions 4.60 through 5.35, which could allow an unauthenticated attacker to execute some OS commands remotely by sending crafted packets to an affected device.","2023-04-25",0.99284,{"cveId":36,"description":37,"publishedDate":38,"cvssScore":21,"cvssVersion":22,"severity":23,"isKev":39,"epssScore":40},"CVE-2022-0342","An authentication bypass vulnerability in the CGI program of Zyxel USG\u002FZyWALL series firmware versions 4.20 through 4.70, USG FLEX series firmware versions 4.50 through 5.20, ATP series firmware versions 4.32 through 5.20, VPN series firmware versions 4.30 through 5.20, and NSG series firmware versions V1.20 through V1.33 Patch 4, which could allow an attacker to bypass the web authentication and obtain administrative access of the device.","2022-03-28",false,0.95134,{"cveId":42,"description":43,"publishedDate":44,"cvssScore":21,"cvssVersion":22,"severity":23,"isKev":4,"epssScore":45},"CVE-2020-29583","Firmware version 4.60 of Zyxel USG devices contains an undocumented account (zyfwp) with an unchangeable password. The password for this account can be found in cleartext in the firmware. This account can be used by someone to login to the ssh server or web interface with admin privileges.","2020-12-22",0.90155,{"cveId":47,"description":48,"publishedDate":49,"cvssScore":21,"cvssVersion":22,"severity":23,"isKev":4,"epssScore":50},"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",0.29024,{"cveId":52,"description":53,"publishedDate":49,"cvssScore":21,"cvssVersion":22,"severity":23,"isKev":4,"epssScore":54},"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":56,"description":57,"publishedDate":58,"cvssScore":59,"cvssVersion":60,"severity":61,"isKev":39,"epssScore":62},"CVE-2019-9955","On Zyxel ATP200, ATP500, ATP800, USG20-VPN, USG20W-VPN, USG40, USG40W, USG60, USG60W, USG110, USG210, USG310, USG1100, USG1900, USG2200-VPN, ZyWALL 110, ZyWALL 310, ZyWALL 1100 devices, the security firewall login page is vulnerable to Reflected XSS via the unsanitized 'mp_idx' parameter.","2019-04-22",6.1,"v3.0","Medium",0.2118,{"cveId":64,"description":65,"publishedDate":66,"cvssScore":59,"cvssVersion":22,"severity":61,"isKev":39,"epssScore":67},"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",0.09402,{"cveId":69,"description":70,"publishedDate":66,"cvssScore":71,"cvssVersion":22,"severity":72,"isKev":39,"epssScore":73},"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,"High",0.06175,[75,85,90,92,96,99,103],{"cveId":76,"description":77,"publishedDate":78,"cvssScore":79,"severity":72,"isKev":4,"epssScore":80,"cisaVulnName":81,"cisaDateAdded":82,"cisaShortDescription":83,"cisaRequiredAction":84},"CVE-2024-11667","A directory traversal vulnerability in the web management interface of Zyxel ATP series firmware versions V5.00 through V5.38, USG FLEX series firmware versions V5.00 through V5.38, USG FLEX 50(W) series firmware versions V5.10 through V5.38, and USG20(W)-VPN series firmware versions V5.10 through V5.38 could allow an attacker to download or upload files via a crafted URL.","2024-11-27",7.5,0.02929,"Zyxel Multiple Firewalls Path Traversal Vulnerability","2024-12-03","Multiple Zyxel firewalls contain a path traversal vulnerability in the web management interface that could allow an attacker to download or upload files via a crafted URL.","Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",{"cveId":52,"description":53,"publishedDate":49,"cvssScore":21,"severity":23,"isKev":4,"epssScore":54,"cisaVulnName":86,"cisaDateAdded":87,"cisaShortDescription":88,"cisaRequiredAction":89},"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":47,"description":48,"publishedDate":49,"cvssScore":21,"severity":23,"isKev":4,"epssScore":50,"cisaVulnName":86,"cisaDateAdded":87,"cisaShortDescription":91,"cisaRequiredAction":89},"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.",{"cveId":31,"description":32,"publishedDate":33,"cvssScore":21,"severity":23,"isKev":4,"epssScore":34,"cisaVulnName":93,"cisaDateAdded":94,"cisaShortDescription":95,"cisaRequiredAction":89},"Zyxel Multiple Firewalls OS Command Injection Vulnerability","2023-05-31","Zyxel ATP, USG FLEX, VPN, and ZyWALL\u002FUSG firewalls allow for improper error message handling which could allow an unauthenticated attacker to execute OS commands remotely by sending crafted packets to an affected device.",{"cveId":26,"description":27,"publishedDate":28,"cvssScore":21,"severity":23,"isKev":4,"epssScore":29,"cisaVulnName":93,"cisaDateAdded":97,"cisaShortDescription":98,"cisaRequiredAction":89},"2022-05-16","A command injection vulnerability in the CGI program of some Zyxel firewall versions could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.",{"cveId":18,"description":19,"publishedDate":20,"cvssScore":21,"severity":23,"isKev":4,"epssScore":24,"cisaVulnName":100,"cisaDateAdded":101,"cisaShortDescription":102,"cisaRequiredAction":89},"Zyxel Multiple NAS Devices OS Command Injection Vulnerability","2022-03-25","Multiple Zyxel network-attached storage (NAS) devices contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code.",{"cveId":42,"description":43,"publishedDate":44,"cvssScore":21,"severity":23,"isKev":4,"epssScore":45,"cisaVulnName":104,"cisaDateAdded":105,"cisaShortDescription":106,"cisaRequiredAction":89},"Zyxel Multiple Products Use of Hard-Coded Credentials Vulnerability","2021-11-03","Zyxel firewalls (ATP, USG, VM) and AP Controllers (NXC2500 and NXC5500) contain a use of hard-coded credentials vulnerability in an undocumented account (\"zyfwp\") with an unchangeable password.",{"title":108,"metaDescription":109,"keywords":110,"structuredData":111},"Atp500 by Zyxel - Security Vulnerabilities & Analysis | Precursor Intelligence","Comprehensive security analysis for Atp500 by Zyxel with 43 tracked vulnerabilities including 6 critical and 1 high-severity issues and 7 CISA KEV vulnerabilities. Real-time threat intelligence, CVE tracking, and security recommendations.","Atp500 vulnerabilities, Atp500 security, Atp500 CVE, Zyxel Atp500, Atp500 threat intelligence, Zyxel security, product security analysis, cybersecurity threats, vulnerability management, CVE tracking, Atp500 KEV, Atp500 exploited vulnerabilities",{"@context":112,"@type":113,"name":114,"description":109,"url":115,"manufacturer":116,"applicationCategory":120,"softwareVersion":121,"mainEntity":122},"https:\u002F\u002Fschema.org","SoftwareApplication","Atp500","https:\u002F\u002Fprecursorintelligence.com\u002Fvulnerabilities\u002Ftechnologies\u002Fvendors\u002Fzyxel\u002Fatp500",{"@type":117,"name":118,"url":119},"Organization","Zyxel","https:\u002F\u002Fprecursorintelligence.com\u002Fvendors\u002Fzyxel","Security Software","Multiple versions",{"@type":123,"name":124,"description":125,"vulnerabilityCount":10,"dateModified":12},"SecurityVulnerability","Atp500 Security Vulnerabilities","Security vulnerabilities affecting Atp500 by Zyxel",{"totalVersions":9,"totalVulnerabilities":10,"kevVulnerabilities":11,"lastUpdated":12,"generatedAt":127,"apiVersion":128},"2026-10-18T21:28:34.772Z","3.0",[130],{"product":131,"cves":132},"atp500_firmware",25,{"rows":134,"total":11,"capped":39,"failed":9},[135,139,143,147,151,155,159],{"cveId":76,"name":81,"severity":72,"cvss":79,"added":82,"epss":80,"published":136,"ranges":137,"checked":4,"hits":138,"covers":39},"2024-11-27T10:15:04.21",[],[],{"cveId":52,"name":86,"severity":23,"cvss":21,"added":87,"epss":54,"published":140,"ranges":141,"checked":4,"hits":142,"covers":39},"2023-05-24T13:15:09.56",[],[],{"cveId":47,"name":86,"severity":23,"cvss":21,"added":87,"epss":50,"published":144,"ranges":145,"checked":4,"hits":146,"covers":39},"2023-05-24T13:15:09.64",[],[],{"cveId":31,"name":93,"severity":23,"cvss":21,"added":94,"epss":34,"published":148,"ranges":149,"checked":4,"hits":150,"covers":39},"2023-04-25T02:15:08.743",[],[],{"cveId":26,"name":93,"severity":23,"cvss":21,"added":97,"epss":29,"published":152,"ranges":153,"checked":4,"hits":154,"covers":39},"2022-05-12T14:15:07.053",[],[],{"cveId":18,"name":100,"severity":23,"cvss":21,"added":101,"epss":24,"published":156,"ranges":157,"checked":4,"hits":158,"covers":39},"2020-03-04T20:15:10.75",[],[],{"cveId":42,"name":104,"severity":23,"cvss":21,"added":105,"epss":45,"published":160,"ranges":161,"checked":4,"hits":162,"covers":39},"2020-12-22T22:15:14.443",[],[]]