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 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 - 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...

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 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 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 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

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...

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...

EUVD-2026-33876

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-2026-3870

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-2026-3870

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-2026-3870

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...

EUVD-2026-33873

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-2026-3870

Zyxel VMG4005-B50B firmware versions up to 5.13(ABRL.5.4)C0 contain a buffer overflow in the UPnP AddPortMapping() command. This vulnerability could allow an adjacent attacker to trigger a temporary denial-of-service (DoS) condition affecting the UPnP function of the device. The available documen...

PT-2026-45689

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...