Zyxel Security Vulnerabilities (CVEs)

Track 76 security vulnerabilities affecting Zyxel products and software. Get instant email alerts when new CVEs are discovered, automated security monitoring, and patch guidance.

20 Critical
44 High
12 Medium
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CVE-2023-27992 9.8

This is a critical pre-authentication command injection vulnerability in Zyxel NAS devices that allows unauthenticated remote attackers to execute arb...

Jun 19, 2023
CVE-2023-27988 7.2

This vulnerability allows authenticated attackers with administrator privileges to execute arbitrary operating system commands on affected Zyxel NAS32...

May 30, 2023
CVE-2023-33009 9.8

A buffer overflow vulnerability in Zyxel firewall notification functions allows unauthenticated attackers to cause denial-of-service or execute arbitr...

May 24, 2023
CVE-2023-22919 8.8

This is a post-authentication command injection vulnerability in Zyxel NBG6604 home routers. An authenticated attacker can execute arbitrary OS comman...

May 1, 2023
CVE-2023-22922 7.5

A buffer overflow vulnerability in Zyxel NBG-418N v2 router firmware allows remote unauthenticated attackers to cause denial-of-service conditions by ...

May 1, 2023
CVE-2023-28769 9.8

A buffer overflow vulnerability in the libclinkc.so library of the zhttpd web server on Zyxel DX5401-B0 devices allows remote unauthenticated attacker...

Apr 27, 2023
CVE-2023-28771 9.8

This vulnerability allows unauthenticated remote attackers to execute arbitrary operating system commands on affected Zyxel firewall devices by sendin...

Apr 25, 2023
CVE-2023-27991 8.8

This is a post-authentication command injection vulnerability in Zyxel firewall CLI commands that allows authenticated attackers to execute arbitrary ...

Apr 24, 2023
CVE-2023-22913 8.1

A post-authentication command injection vulnerability in Zyxel USG FLEX and VPN series firewalls allows authenticated attackers to execute arbitrary c...

Apr 24, 2023
CVE-2023-22915 7.5

A buffer overflow vulnerability in the fbwifi_forward.cgi CGI program of affected Zyxel devices allows remote unauthenticated attackers to cause denia...

Apr 24, 2023
CVE-2023-22917 7.5

A buffer overflow vulnerability in Zyxel network devices allows remote unauthenticated attackers to cause denial of service by uploading a crafted con...

Apr 24, 2023
CVE-2022-38547 7.2

This is a post-authentication command injection vulnerability in Zyxel firewall devices that allows authenticated administrators to execute arbitrary ...

Feb 7, 2023
CVE-2022-43391 6.5

A buffer overflow vulnerability in the CGI program of Zyxel NR7101 firmware allows authenticated attackers to cause denial-of-service conditions by se...

Jan 11, 2023
CVE-2022-30526 7.8

This CVE describes a local privilege escalation vulnerability in Zyxel firewall CLI commands where a local attacker can execute OS commands with root ...

Jul 19, 2022
CVE-2022-26532 7.8

This CVE-2022-26532 is an argument injection vulnerability in Zyxel network devices that allows local authenticated attackers to execute arbitrary OS ...

May 24, 2022
CVE-2022-0556 7.3

This CVE describes a local privilege escalation vulnerability in Zyxel AP Configurator (ZAC) version 1.1.4, where incorrect directory permissions allo...

Apr 11, 2022
CVE-2022-0342 9.8

This authentication bypass vulnerability in Zyxel firewall CGI programs allows attackers to circumvent web authentication and gain administrative acce...

Mar 28, 2022
CVE-2021-4039 9.8

This CVE-2021-4039 is a command injection vulnerability in Zyxel NWA-1100-NH access point web interface that allows authenticated attackers to execute...

Mar 1, 2022
CVE-2021-4030 8.0

A cross-site request forgery (CSRF) vulnerability in Zyxel ARMOR Z1/Z2 router firmware allows attackers to execute arbitrary commands by tricking auth...

Feb 24, 2022
CVE-2021-35034 7.4

This vulnerability allows remote attackers to maintain unauthorized access to Zyxel NBG6604 routers by exploiting insufficient session expiration in t...

Dec 29, 2021
CVE-2021-35027 7.5

A directory traversal vulnerability in Zyxel VPN2S firewall firmware allows remote attackers to access sensitive files by manipulating file paths. Thi...

Sep 29, 2021
CVE-2021-35029 9.8

This authentication bypass vulnerability in Zyxel security appliances allows remote attackers to execute arbitrary commands without valid credentials....

Jul 2, 2021
CVE-2020-28899 9.1

CVE-2020-28899 is an authentication bypass vulnerability in ZyXEL LTE4506-M606 routers that allows remote attackers to execute administrative function...

Mar 16, 2021
CVE-2020-29583 9.8

CVE-2020-29583 is a critical vulnerability in Zyxel USG devices where firmware version 4.60 includes a hidden administrative account (zyfwp) with a ha...

Dec 22, 2020
CVE-2020-25014 9.8

A stack-based buffer overflow vulnerability in the fbwifi_continue.cgi component of Zyxel UTM and VPN gateways allows remote unauthenticated attackers...

Nov 27, 2020
CVE-2020-24355 9.8

This vulnerability in Zyxel VMG5313-B30B routers allows regular users to create new accounts with administrative privileges by manipulating JSON param...

Sep 2, 2020

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