Zyxel VMG1312-B10D 5.13AAXA.8 - Local File Inclusion

Zyxel VMG1312-B10D 5.13AAXA.8 is susceptible to local file inclusion. A remote unauthenticated attacker can send a specially crafted URL request containing "dot dot" sequences /../, conduct directory traversal attacks, and view arbitrary files. id: CVE-2018-19326 info: name: Zyxel VMG1312-B10D...

Zyxel ZyWall UAG/USG - Account Creation Access

Zyxel UAG, USG, and ZyWall devices allows a remote attacker to generate guest accounts by directly accessing the account generator via the "Free Time" component. This can lead to unauthorized network access or DoS attacks. id: CVE-2019-12583 info: name: Zyxel ZyWall UAG/USG - Account Creation...

Zyxel ZyWALL 2 Plus Internet Security Appliance - Cross-Site Scripting

ZyXEL ZyWALL 2 Plus Internet Security Appliance contains a cross-site scripting vulnerability. Insecure URI handling leads to bypass of security restrictions, which allows an attacker to execute arbitrary JavaScript codes to perform multiple attacks. id: CVE-2021-46387 info: name: Zyxel ZyWALL 2...

Zyxel NBG2105 V1.00(AAGU.2)C0 - Authentication Bypass

Zyxel NBG2105 V1.00AAGU.2C0 devices are susceptible to authentication bypass vulnerabilities because setting the login cookie to 1 provides administrator access. id: CVE-2021-3297 info: name: Zyxel NBG2105 V1.00AAGU.2C0 - Authentication Bypass author: gy741 severity: high description: Zyxel NBG21...

Zyxel ZyWal/USG/UAG Devices - Cross-Site Scripting

Zyxel ZyWall, USG, and UAG devices allow remote attackers to inject arbitrary web script or HTML via the errmsg parameter freetimefailed.cgi CGI program, aka reflective cross-site scripting. id: CVE-2019-12581 info: name: Zyxel ZyWal/USG/UAG Devices - Cross-Site Scripting author: n-thumann...

Zyxel - Cross-Site Scripting

Zyxel ATP200, ATP500, ATP800, USG20-VPN, USG20W-VPN, USG40, USG40W, USG60, USG60W, USG110, USG210, USG310, USG1100, USG1900, USG2200-VPN, ZyWALL 110, ZyWALL 310, and ZyWALL 1100 devices contain a reflected cross-site scripting vulnerability on the security firewall login page via the mpidx...

CVE-2026-7257

UNSUPPORTED WHEN ASSIGNED An insecure storage of sensitive information vulnerability in the configuration file of Zyxel WRE6505 v2 firmware version V1.00ABDV.3C0 could allow a local attacker with administrator privileges to download and decrypt a backup configuration file...

CVE-2026-7255

UNSUPPORTED WHEN ASSIGNED An improper restriction of excessive authentication attempts vulnerability in the web management interface of Zyxel WRE6505 v2 firmware version V1.00ABDV.3C0 could allow an adjacent attacker on the LAN to brute-force the password and bypass authentication...

CVE-2026-3871

A buffer overflow vulnerability in the UPnP DeletePortMapping command in Zyxel VMG4005-B50B firmware versions through 5.13ABRL.5.4C0 could allow an adjacent attacker to trigger a temporary denial-of-service DoS condition affecting the UPnP function of the affected device...

CVE-2026-3870

A buffer overflow vulnerability in the UPnP AddPortMapping command in Zyxel VMG4005-B50B firmware versions through 5.13ABRL.5.4C0 could allow an adjacent attacker to trigger a temporary denial-of-service DoS condition affecting the UPnP function of the affected device...

CVE-2026-4795

A missing authorization vulnerability in Zyxel GS1200-5v3 firmware versions through 1.00ACPS.2C0, GS1200-8v3 firmware versions through 1.00ACPT.2C0, GS1200-5HPv3 firmware versions through 1.00ACPU.2C0, GS1200-8HPv3 firmware versions through 1.00ACPV.2C0, and GS1200-10v3 firmware versions through...

CVE-2026-7256

UNSUPPORTED WHEN ASSIGNED A command injection vulnerability in the CGI program of Zyxel WRE6505 v2 firmware version V1.00ABDV.3C0 could allow an adjacent attacker on the LAN to execute operating system OS commands on a vulnerable device by sending a crafted HTTP request...

CVE-2026-7287

UNSUPPORTED WHEN ASSIGNED A buffer overflow vulnerability in the formWep, formWlAc, formPasswordSetup, formUpgradeCert, and formDelcert functions of the “webs” binary in Zyxel NWA1100-N customized firmware version 1.00AACE.1C0 could allow an attacker to trigger a denial-of-service DoS condition b...

ZyXel USG - Hardcoded Credentials

A hardcoded credential vulnerability was identified in the 'zyfwp' user account in some Zyxel firewalls and AP controllers. The account was designed to deliver automatic firmware updates to connected access points through FTP. id: CVE-2020-29583 info: name: ZyXel USG - Hardcoded Credentials autho...

Zyxel NAS326 Firmware < V5.21(AAZF.17)C0 - NsaRescueAngel Backdoor Account

The command injection vulnerability in the CGI program "remotehelp-cgi" in Zyxel NAS326 firmware versions before V5.21AAZF.17C0 and NAS542 firmware versions before V5.21ABAG.14C0 could allow an unauthenticated attacker to execute some operating system OS commands by sending a crafted HTTP POST...

CVE-2026-3871

A buffer overflow vulnerability in the UPnP DeletePortMapping command in Zyxel VMG4005-B50B firmware versions through 5.13ABRL.5.4C0 could allow an adjacent attacker to trigger a temporary denial-of-service DoS condition affecting the UPnP function of the affected device...

CVE-2026-3870

A buffer overflow vulnerability in the UPnP AddPortMapping command in Zyxel VMG4005-B50B firmware versions through 5.13ABRL.5.4C0 could allow an adjacent attacker to trigger a temporary denial-of-service DoS condition affecting the UPnP function of the affected device...

CVE-2026-3871

A buffer overflow vulnerability in the UPnP DeletePortMapping command in Zyxel VMG4005-B50B firmware versions through 5.13ABRL.5.4C0 could allow an adjacent attacker to trigger a temporary denial-of-service DoS condition affecting the UPnP function of the affected device...

CVE-2026-3871

A buffer overflow vulnerability in the UPnP DeletePortMapping command in Zyxel VMG4005-B50B firmware versions through 5.13ABRL.5.4C0 could allow an adjacent attacker to trigger a temporary denial-of-service DoS condition affecting the UPnP function of the affected device...

CVE-2026-3871

CVE-2026-3871 describes a buffer overflow in the UPnP DeletePortMapping() command in Zyxel VMG4005-B50B firmware up to 5.13(ABRL.5.4)C0. An adjacent attacker could trigger a temporary DoS affecting UPnP functionality. The exposed impact is the availability of the UPnP service (CVSSv3.1: AV = Adja...