CWE
120 119
Advisory Published
Updated

CVE-2023-27989: Buffer Overflow

First published: Mon Jun 05 2023(Updated: )

A buffer overflow vulnerability in the CGI program of the Zyxel NR7101 firmware versions prior to V1.00(ABUV.8)C0 could allow a remote authenticated attacker to cause denial of service (DoS) conditions by sending a crafted HTTP request to a vulnerable device.

Credit: security@zyxel.com.tw

Affected SoftwareAffected VersionHow to fix
Zyxel Lte7480-m804 Firmware<=1.00\(abra.6\)c0
Zyxel Lte7480-m804
Zyxel Lte7490-m904 Firmware<=1.00\(abqy.5\)c0
Zyxel Lte7490-m904
Zyxel NR7101 firmware<=1.00\(abuv.7\)c0
Zyxel NR7101
Zyxel Nebula Nr7101 Firmware<=1.15\(accc.3\)c0
Zyxel Nebula Nr7101

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Frequently Asked Questions

  • What is the severity of CVE-2023-27989?

    The severity of CVE-2023-27989 is medium.

  • How can a remote attacker exploit CVE-2023-27989?

    A remote attacker can exploit CVE-2023-27989 by sending a crafted HTTP request to a vulnerable device.

  • What is the impact of CVE-2023-27989?

    The impact of CVE-2023-27989 is denial of service (DoS) conditions.

  • Which Zyxel firmware versions are affected by CVE-2023-27989?

    The Zyxel NR7101 firmware versions prior to V1.00(ABUV.8)C0 are affected by CVE-2023-27989.

  • How can I fix CVE-2023-27989?

    To fix CVE-2023-27989, it is recommended to update to the latest firmware version provided by Zyxel.

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