Zyxel Multiple Firewalls OS Command Injection Vulnerability

Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG 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...

Zyxel patches two critical vulnerabilities

Zyxell has released a security advisory for multiple buffer overflow vulnerabilities. Exploitation of these vulnerabilities could allow an unauthenticated attacker to cause denial-of-service DoS conditions and even a remote code execution on the affected Zyxell firewalls. Affected users should...

Zyxel USG < 4.35 / ATP < 4.35 / VPN < 4.35 / ZyWALL < 4.35 (RCE) (CVE-2020-9054)

The Firmware version of the Zyxel USG, ATP, ZyWALL or VPN is affected by multiple vulnerabilities: - A buffer overflow vulnerability in the notification 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...

Zyxel Issues Critical Security Patches for Firewall and VPN Products

Zyxel has released software updates to address two critical security flaws affecting select firewall and VPN products that could be abused by remote attackers to achieve code execution. Both the flaws – CVE-2023-33009 and CVE-2023-33010 – are buffer overflow vulnerabilities and are rated 9.8 out ...

Zyxel Issues Critical Security Patches for Firewall and VPN Products

Zyxel has released software updates to address two critical security flaws affecting select firewall and VPN products that could be abused by remote attackers to achieve code execution. Both the flaws – CVE-2023-33009 and CVE-2023-33010 – are buffer overflow vulnerabilities and are rated 9.8 out ...

Vulnerabilities fixed in Zyxel firewalls

Zyxel has fixed vulnerabilities in the firmware of firewall series ATP, USG FLEX, VPN and ZyWall/USG. An unauthenticated malicious party could exploit the vulnerabilities to cause a denial-of-service, and possibly also to execute arbitrary execute arbitrary code on the vulnerable system. Zyxel ha...

Buffer overflow

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 50W firmware versions 4.60 through 5.36 Patch 1, USG20W-VPN firmware versions 4.60 through 5.36 Patch...

The vulnerability of microprogrammed software in network devices such as Zyxel ZyWALL/USG, VPN, USG FLEX, ATP allows a perpetrator to execute arbitrary commands.

The vulnerability of Zyxel ZyWALL/USG, VPN, USG FLEX, and ATP network devices exists due to the lack of measures taken to neutralize special elements used in the operating system commands. Exploiting this vulnerability allows a malicious actor to execute arbitrary commands remotely...

PT-2023-2851

Name of the Vulnerable Software and Affected Versions Zyxel ATP series versions 4.32 through 5.36 Patch 1 Zyxel USG FLEX series versions 4.50 through 5.36 Patch 1 Zyxel USG FLEX 50W versions 4.25 through 5.36 Patch 1 Zyxel USG20W-VPN versions 4.25 through 5.36 Patch 1 Zyxel VPN series versions 4....

Zyxel Firewall Devices Vulnerable to Remote Code Execution Attacks — Patch Now

Networking equipment maker Zyxel has released patches for a critical security flaw in its firewall devices that could be exploited to achieve remote code execution on affected systems. The issue, tracked as CVE-2023-28771, is rated 9.8 on the CVSS scoring system. Researchers from TRAPA Security...

CVE-2023-28771

Improper error message handling in Zyxel ZyWALL/USG 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...

Vulnerabilities fixed in Zyxel Firewalls and Access Points

Zyxel has fixed vulnerabilities in the firmware of several USG, APT, VPN and ZyWall systems. A malicious party can exploit the vulnerabilities exploit them for attacks that can result in the following categories of damage: Cross-Site Scripting XSS Denial-of-Service DoS. Remote code execution...

CVE-2023-28771

CVE-2023-28771 is an OS command injection in Zyxel devices (ZyWALL/USG, VPN, USG FLEX, ATP) due to improper error message handling. A unauthenticated attacker can remotely execute commands by sending crafted UDP/IKE-related packets to affected firmware: Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG li...

Zyxel ZyWALL USG 操作系统命令注入漏洞

The Zyxel ZyWALL USG is a network security firewall appliance from China's Heqin Zyxel. An operating system command injection vulnerability exists in Zyxel ZyWALL USG versions 4.60 through 5.35, which stems from improper error message handling. An attacker could exploit this vulnerability to...

CVE-2022-38547

A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG 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...

CVE-2022-38547

A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG 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...

Command injection

A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG 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...

ZyXEL ZyWALL USG 操作系统命令注入漏洞

Zyxel ZyXEL ZyWALL USG is a network security firewall appliance from China Hopkins Zyxel. A security vulnerability exists in Zyxel ZyWALL/USG versions 4.20 to 4.72, VPN versions 4.30 to 5.32, USG FLEX versions 4.50 to 5.32, and ATP versions 4.32 to 5.32. The vulnerability stems from a...

The vulnerability of the Common Gateway Interface (CGI) interface of microprogramming software for network devices such as ZyXEL USG, ZyWALL, USG FLEX, ATP, and VPN allows attackers to execute cross-site scripting attacks.

The vulnerability of the Common Gateway Interface CGI interface of microprogrammed network devices such as ZyXEL USG, ZyWALL, USG FLEX, ATP, and VPN is related to the lack of protective measures for the website structure. Exploiting this vulnerability allows a malicious actor to perform cross-sit...

CVE-2022-40603

A cross-site scripting XSS vulnerability in the CGI program of Zyxel ZyWALL/USG 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...