【Security Vulnerability Warning】There are security vulnerabilities, CVE-2023-27991 and CVE-2023-28771, in Zyxel firewall. Please confirm and update as soon as possible.

• Subject: There are security vulnerabilities, CVE-2023-27991 and CVE-2023-28771, in Zyxel firewall. Please confirm and update as soon as possible.
• Description:
  For details, please refer to the following links.
  1. https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls
  2. https://nvd.nist.gov/vuln/detail/CVE-2023-27991
  3. https://nvd.nist.gov/vuln/detail/CVE-2023-28771
  4. https://thehackernews.com/2023/04/zyxel-firewall-devices-vulnerable-to.html

Network System Division
Computer and Communication Center