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Rewterz Threat Advisory – CVE-2023-27989 – Zyxel NR7101 Devices Vulnerability

Severity

Medium

Analysis Summary

CVE-2023-27989

Zyxel NR7101 devices are vulnerable to a denial of service, caused by a buffer overflow in the CGI program. By sending a specially crafted HTTP request, a remote authenticated attacker could exploit this vulnerability to cause a denial of service condition.

Impact

  • Denial of Service

Indicators Of Compromise

CVE

  • CVE-2023-27989

Affected Vendors

Zyxel

Affected Products

  • Zyxel LTE7480-M804 1.00(ABRA.6)C0
  • Zyxel LTE7490-M904 1.00(ABQY.5)C0
  • Zyxel NR7101 1.00(ABUV.7)C0
  • Zyxel Nebula NR7101 1.15(ACCC.3)C0

Remediation

Zyxel Web site