CVE-2023-6764

CVE-2023-6764 is a format-string vulnerability in Zyxel devices’ IPSec VPN functionality. Affected products and versions include Zyxel ATP series firmware 4.32–5.37 Patch 1, USG FLEX series 4.50–5.37 Patch 1, USG FLEX 50(W) 4.16–5.37 Patch 1, and USG20(W)-VPN 4.16–5.37 Patch 1. An attacker could ...

CVE-2023-6764

A format string vulnerability in a function of the IPSec VPN feature in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50W series firmware versions from 4.16 through 5.37 Patch 1, and USG20W-VPN series...

CVE-2023-6399

A format string vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50W series firmware versions from 4.16 through 5.37 Patch 1, USG20W-VPN series firmware versions from 4.16 through 5.37...

CVE-2023-6399

A format string vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50W series firmware versions from 4.16 through 5.37 Patch 1, USG20W-VPN series firmware versions from 4.16 through 5.37...

CVE-2023-6398

A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50W series firmware versions from 4.16 through 5.37 Patch 1, USG20W-VPN...

CVE-2023-6398

A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50W series firmware versions from 4.16 through 5.37 Patch 1, USG20W-VPN...

CVE-2023-6398

CVE-2023-6398 is a post-authentication command-injection vulnerability in Zyxel devices where the file upload binary can be abused by an authenticated administrator to execute OS commands on the device via FTP. Affected products include ZyXEL ATP series (4.32–5.37 Patch 1), USG FLEX series (4.50–...

CVE-2023-6397

A null pointer dereference in Zyxel ATP series firmware 4.32–5.37 Patch 1 and USG FLEX series firmware 4.50–5.37 Patch 1, within the Anti-Malware feature, can allow a LAN-based attacker to cause DoS by sending a crafted RAR file to a LAN-side host. Affected products: Zyxel ATP and USG FLEX. Impac...

CVE-2023-6397

A null pointer dereference vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1 and USG FLEX series firmware versions from 4.50 through 5.37 Patch 1 could allow a LAN-based attacker to cause denial-of-service DoS conditions by downloading a crafted RAR compressed fil...

CVE-2023-6397

A null pointer dereference vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1 and USG FLEX series firmware versions from 4.50 through 5.37 Patch 1 could allow a LAN-based attacker to cause denial-of-service DoS conditions by downloading a crafted RAR compressed fil...

CVE-2023-6399: Use of Externally-Controlled Format String

A format string vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50W series firmware versions from 4.16 through 5.37 Patch 1, USG20W-VPN series firmware versions from 4.16 through 5.37...

CVE-2023-6398: Improper Neutralization of Special Elements used in an OS Command

A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50W series firmware versions from 4.16 through 5.37 Patch 1, USG20W-VPN...

CVE-2023-6764: Use of Externally-Controlled Format String

A format string vulnerability in a function of the IPSec VPN feature in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50W series firmware versions from 4.16 through 5.37 Patch 1, and USG20W-VPN series...

CVE-2023-6397: NULL Pointer Dereference

A null pointer dereference vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1 and USG FLEX series firmware versions from 4.50 through 5.37 Patch 1 could allow a LAN-based attacker to cause denial-of-service DoS conditions by downloading a crafted RAR compressed fil...

Zyxel parse_config.py Command Injection

This module exploits vulnerabilities in multiple Zyxel devices including the VPN, USG and APT series. The affected firmware versions depend on the device module, see this module's documentation for more details. Note this module was unable to be tested against a real Zyxel device and was tested...

PT-2023-8710 · Zyxel · Zyxel Atp Series +3

Name of the Vulnerable Software and Affected Versions: Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1 Zyxel USG FLEX series firmware versions from 4.50 through 5.37 Patch 1 Zyxel USG FLEX 50W series firmware versions from 4.16 through 5.37 Patch 1 Zyxel USG20W-VPN series firmwa...

zyxel USG FLEX Account Print CGI Command Execution

The vulnerability of the accountprint.cgi component in the Zyxel USG FLEX and VPN network devices is related to an incorrect limitation on the path name to the tmp directory. Exploiting this vulnerability allows a remote attacker to execute arbitrary commands...

Zyxel USG FLEX fbwifi_forward.cgi DoS

The vulnerability of the fbwififorward.cgi component of the Zyxel USG FLEX, USG FLEX 50W, USG20W-VPN, and VPN networking devices is related to the output of operations that go beyond the buffer in memory. Exploiting this vulnerability could allow a malicious actor to cause service interruptions b...

Vulnerabilities fixed in Zyxel products

Zyxel has fixed vulnerabilities in the firmware of several ATP and USG series firewalls. A malicious party could exploit them to launch attacks that can result in the following categories of damage: Cross-Site Scripting XSS Denial-of-Service DoS. Manipulation of data Access to system data...

ZyXEL USG FLEX Information Disclosure

The vulnerability of the Wi-Fi hotspot technology implemented in ZyXEL USG FLEX and VPN network devices is related to deficiencies in access control. Exploiting this vulnerability can allow attackers to gain unauthorized access to protected information...