CVE-2023-27989

MEDIUM

Zyxel Lte7480-m804 Firmware < 1.00\(abra.6\)c0 - Buffer Overflow

Title source: rule

Description

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.

References (1)

Core 1

Core References

Patch, Third Party Advisory vendor-advisory

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-buffer-overflow-vulnerability-in-4g-lte-and-5g-nr-outdoor-routers

Scores

CVSS v3 6.5

EPSS 0.0068

EPSS Percentile 71.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-120

Status published

Products (4)

zyxel/lte7480-m804_firmware < 1.00\(abra.6\)c0

zyxel/lte7490-m904_firmware < 1.00\(abqy.5\)c0

zyxel/nebula_nr7101_firmware < 1.15\(accc.3\)c0

zyxel/nr7101_firmware < 1.00\(abuv.7\)c0

Published Jun 05, 2023

Tracked Since Feb 18, 2026