[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fKrYyoJZLgIL0OEIWJDDdsr88TBgpll9U476G0S9JMe0":3,"g5a-family:zyxel\u002Fusg40_firmware":129,"g5a-ex:zyxel\u002Fusg40_firmware@*":130},{"success":4,"data":5},true,{"product":6,"versions":34,"topVulnerabilitiesByEpss":43,"kevVulnerabilities":97,"seoMetadata":107,"meta":126},{"vendorName":7,"productName":8,"versionCount":9,"totalCves":10,"kevCount":11,"lastCveUpdate":12,"versions":13,"description":33},"zyxel","usg40_firmware",8,9,2,"2023-02-07",[14,18,21,23,25,27,29,31],{"version":15,"cve_count":16,"kev_count":16,"has_kev":17},"4.20",0,false,{"version":19,"cve_count":20,"kev_count":16,"has_kev":17},"4.31",1,{"version":22,"cve_count":16,"kev_count":16,"has_kev":17},"4.35",{"version":24,"cve_count":16,"kev_count":16,"has_kev":17},"4.35\\(aala.3\\)c0",{"version":26,"cve_count":20,"kev_count":20,"has_kev":4},"4.60",{"version":28,"cve_count":16,"kev_count":16,"has_kev":17},"4.64",{"version":30,"cve_count":16,"kev_count":16,"has_kev":17},"4.70",{"version":32,"cve_count":16,"kev_count":16,"has_kev":17},"4.71","Usg40 Firmware by Zyxel is a technology product with 8 tracked versions and 9 known security vulnerabilities including 2 CISA Known Exploited Vulnerabilities. Get comprehensive security analysis, vulnerability tracking, and threat intelligence for this product.",[35,36,37,38,39,40,41,42],{"version":15,"cve_count":16,"kev_count":16,"has_kev":17},{"version":19,"cve_count":20,"kev_count":16,"has_kev":17},{"version":22,"cve_count":16,"kev_count":16,"has_kev":17},{"version":24,"cve_count":16,"kev_count":16,"has_kev":17},{"version":26,"cve_count":20,"kev_count":20,"has_kev":4},{"version":28,"cve_count":16,"kev_count":16,"has_kev":17},{"version":30,"cve_count":16,"kev_count":16,"has_kev":17},{"version":32,"cve_count":16,"kev_count":16,"has_kev":17},[44,52,57,62,70,76,81,87,92],{"cveId":45,"description":46,"publishedDate":47,"cvssScore":48,"cvssVersion":49,"severity":50,"isKev":4,"epssScore":51},"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":53,"description":54,"publishedDate":55,"cvssScore":48,"cvssVersion":49,"severity":50,"isKev":17,"epssScore":56},"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",0.95134,{"cveId":58,"description":59,"publishedDate":60,"cvssScore":48,"cvssVersion":49,"severity":50,"isKev":4,"epssScore":61},"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":63,"description":64,"publishedDate":65,"cvssScore":66,"cvssVersion":67,"severity":68,"isKev":17,"epssScore":69},"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":71,"description":72,"publishedDate":12,"cvssScore":73,"cvssVersion":49,"severity":74,"isKev":17,"epssScore":75},"CVE-2022-38547","A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL\u002FUSG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32, which could allow an authenticated attacker with administrator privileges to execute OS commands.",7.2,"High",0.02829,{"cveId":77,"description":78,"publishedDate":79,"cvssScore":48,"cvssVersion":49,"severity":50,"isKev":17,"epssScore":80},"CVE-2021-35029","An authentication bypasss vulnerability in the web-based management interface of Zyxel USG\u002FZywall series firmware versions 4.35 through 4.64 and USG Flex, ATP, and VPN series firmware versions 4.35 through 5.01, which could allow a remote attacker to execute arbitrary commands on an affected device.","2021-07-02",0.02255,{"cveId":82,"description":83,"publishedDate":84,"cvssScore":85,"cvssVersion":49,"severity":68,"isKev":17,"epssScore":86},"CVE-2022-2030","A directory traversal vulnerability caused by specific character sequences within an improperly sanitized URL was identified in some CGI programs of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG\u002FZyWALL series firmware versions 4.11 through 4.72, that could allow an authenticated attacker to access some restricted files on a vulnerable device.","2022-07-19",6.5,0.01354,{"cveId":88,"description":89,"publishedDate":84,"cvssScore":90,"cvssVersion":49,"severity":74,"isKev":17,"epssScore":91},"CVE-2022-30526","A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG\u002FZyWALL series firmware versions 4.09 through 4.72, which could allow a local attacker to execute some OS commands with root privileges in some directories on a vulnerable device.",7.8,0.01126,{"cveId":93,"description":94,"publishedDate":95,"cvssScore":66,"cvssVersion":49,"severity":68,"isKev":17,"epssScore":96},"CVE-2022-40603","A cross-site scripting (XSS) vulnerability in the CGI program of Zyxel ZyWALL\u002FUSG series firmware versions 4.30 through 4.72, VPN series firmware versions 4.30 through 5.31, USG FLEX series firmware versions 4.50 through 5.31, and ATP series firmware versions 4.32 through 5.31, which could allow an attacker to trick a user into visiting a crafted URL with the XSS payload. Then, the attacker could gain access to some browser-based information if the malicious script is executed on the victim’s browser.","2022-12-06",0.00386,[98,103],{"cveId":45,"description":46,"publishedDate":47,"cvssScore":48,"severity":50,"isKev":4,"epssScore":51,"cisaVulnName":99,"cisaDateAdded":100,"cisaShortDescription":101,"cisaRequiredAction":102},"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.","Apply updates per vendor instructions.",{"cveId":58,"description":59,"publishedDate":60,"cvssScore":48,"severity":50,"isKev":4,"epssScore":61,"cisaVulnName":104,"cisaDateAdded":105,"cisaShortDescription":106,"cisaRequiredAction":102},"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},"Usg40 Firmware by Zyxel - Security Vulnerabilities & Analysis | Precursor Intelligence","Comprehensive security analysis for Usg40 Firmware by Zyxel covering 8 versions with 9 tracked vulnerabilities including 2 critical and 0 high-severity issues and 2 CISA KEV vulnerabilities. Real-time threat intelligence, CVE tracking, and security recommendations.","Usg40 Firmware vulnerabilities, Usg40 Firmware security, Usg40 Firmware CVE, Zyxel Usg40 Firmware, Usg40 Firmware threat intelligence, Zyxel security, product security analysis, cybersecurity threats, vulnerability management, CVE tracking, Usg40 Firmware KEV, Usg40 Firmware 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","Usg40 Firmware","https:\u002F\u002Fprecursorintelligence.com\u002Fvulnerabilities\u002Ftechnologies\u002Fvendors\u002Fzyxel\u002Fusg40_firmware",{"@type":117,"name":118,"url":119},"Organization","Zyxel","https:\u002F\u002Fprecursorintelligence.com\u002Fvendors\u002Fzyxel","Security Software","8 versions tracked",{"@type":123,"name":124,"description":125,"vulnerabilityCount":10,"dateModified":12},"SecurityVulnerability","Usg40 Firmware Security Vulnerabilities","Security vulnerabilities affecting Usg40 Firmware by Zyxel",{"totalVersions":9,"totalVulnerabilities":10,"kevVulnerabilities":11,"lastUpdated":12,"generatedAt":127,"apiVersion":128},"2026-10-18T23:06:09.019Z","3.0",[],{"rows":131,"total":11,"capped":17,"failed":16},[132,137],{"cveId":45,"name":99,"severity":50,"cvss":48,"added":100,"epss":51,"published":133,"ranges":134,"checked":4,"hits":136,"covers":17},"2020-03-04T20:15:10.75",[135],"4.35 to before 4.35(aala.3)c0",[],{"cveId":58,"name":104,"severity":50,"cvss":48,"added":105,"epss":61,"published":138,"ranges":139,"checked":4,"hits":140,"covers":17},"2020-12-22T22:15:14.443",[26],[]]