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...

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...

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-2023-27991

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...

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...

CVE-2023-27991

Zyxel vulnerability CVE-2023-27991 is a post-authentication command injection in the CLI of Zyxel firewall devices (ATP, USG FLEX, USG FLEX 50(W), USG20(W)-VPN, VPN, ZyWALL/USG) that could let an authenticated attacker execute OS commands remotely. Affected firmware ranges include ATP 4.32–5.35, ...