CVE-2023-35136

An improper input validation vulnerability in the “Quagga” package of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG FLEX 50W series firmware versions 4.16 through 5.37, USG20W-VPN series firmware versions 4.16 through 5.37, and...

CVE-2023-35136

CVE-2023-35136 describes an improper input validation vulnerability in the Quagga package across Zyxel devices (ATP series 4.32–5.37; USG FLEX 4.50–5.37; USG FLEX 50(W) 4.16–5.37; USG20(W)-VPN 4.16–5.37; VPN series 4.30–5.37) that could allow an authenticated local attacker to access configuratio...

PT-2023-7251 · Zyxel · Zyxel Usg Flex Series +3

Name of the Vulnerable Software and Affected Versions: Zyxel ATP series version 5.37 Zyxel USG FLEX series version 5.37 Zyxel USG FLEX 50W series version 5.37 Zyxel USG20W-VPN series version 5.37 Description: A buffer overflow issue in the firmware could allow an authenticated local attacker with...

CVE-2023-34138

A command injection vulnerability in the hotspot management feature of the Zyxel ATP series firmware versions 4.60 through 5.36 Patch 2, USG FLEX series firmware versions 4.60 through 5.36 Patch 2, USG FLEX 50W series firmware versions 4.60 through 5.36 Patch 2, USG20W-VPN series firmware version...

CVE-2023-33011

A format string vulnerability in the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50W series firmware versions 5.10 through 5.36 Patch 2, USG20W-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN...

CVE-2023-34140

A buffer overflow vulnerability in the Zyxel ATP series firmware versions 4.32 through 5.36 Patch 2, USG FLEX series firmware versions 4.50 through 5.36 Patch 2, USG FLEX 50W series firmware versions 4.16 through 5.36 Patch 2, USG20W-VPN series firmware versions 4.16 through 5.36 Patch 2, VPN...

Command injection

A command injection vulnerability in the access point AP management feature of the Zyxel ATP series firmware versions 5.00 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50W series firmware versions 5.00 through 5.36 Patch 2, USG20W-VPN series firmware...

Command injection

A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50W series firmware versions 5.10 through 5.36 Patch 2, USG20W-VPN series firmware versions 5.10...

Buffer overflow

A buffer overflow vulnerability in the Zyxel ATP series firmware versions 4.32 through 5.36 Patch 2, USG FLEX series firmware versions 4.50 through 5.36 Patch 2, USG FLEX 50W series firmware versions 4.16 through 5.36 Patch 2, USG20W-VPN series firmware versions 4.16 through 5.36 Patch 2, VPN...

CVE-2023-34141

A command injection vulnerability in the access point AP management feature of the Zyxel ATP series firmware versions 5.00 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50W series firmware versions 5.00 through 5.36 Patch 2, USG20W-VPN series firmware...

CVE-2023-34141

CVE-2023-34141 affects Zyxel devices (ATP series, USG FLEX series including USG FLEX 50(W), USG20(W)-VPN, VPN series; NXC2500 and NXC5500) with firmware ranges up to 5.36 Patch 2 or 6.10 AAIG/AAOS variants. Description: a command-injection in the access point (AP) management feature could allow a...

CVE-2023-34140

CVE-2023-34140 affects Zyxel CAPWAP-based devices (ATP series 4.32–5.36 Patch 2; USG FLEX 4.50–5.36 Patch 2; USG FLEX 50(W) 4.16–5.36 Patch 2; USG20(W)-VPN 4.16–5.36 Patch 2; VPN 4.30–5.36 Patch 2; NXC2500 6.10(AAIG.0–AAIG.3); NXC5500 6.10(AAOS.0–AAOS.4)). A buffer overflow in the CAPWAP daemon a...

CVE-2023-33012

CVE-2023-33012 is a command-injection vulnerability in the configuration parser of Zyxel devices (ATP, USG FLEX/50(W), USG20(W)-VPN, VPN series). The root cause is a flaw in parsing GRE configurations when cloud management mode is enabled, allowing an unauthenticated, LAN-based attacker to execut...

CVE-2023-33011

A format string vulnerability in the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50W series firmware versions 5.10 through 5.36 Patch 2, USG20W-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN...

Zyxel Multiple Firewalls Buffer Overflow Vulnerability

Zyxel ATP, USG FLEX, USG FLEX 50W, USG20W-VPN, VPN, and ZyWALL/USG firewalls contain a buffer overflow vulnerability in the ID processing function that could allow an unauthenticated attacker to cause denial-of-service DoS conditions and remote code execution on an affected device...

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 ...

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...

Buffer overflow

A buffer overflow vulnerability in the ID processing 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 50W firmware versions 4.25 through 5.36 Patch 1, USG20W-VPN firmware versions 4.25 through 5.36 Patc...

CVE-2023-33010

A buffer overflow vulnerability in the ID processing 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 50W firmware versions 4.25 through 5.36 Patch 1, USG20W-VPN firmware versions 4.25 through 5.36 Patc...

CVE-2023-27991

The post-authentication command injection vulnerability in the CLI command of Zyxel ATP series firmware versions 4.32 through 5.35, USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50W firmware versions 4.16 through 5.35, USG20W-VPN firmware versions 4.16 through 5.35, and VPN series...