CVE-2022-43391

MEDIUM

Zyxel NR7101 <V1.15(ACCC.3)C0 - Buffer Overflow

Title source: llm

Description

A buffer overflow vulnerability in the parameter of the CGI program in Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an authenticated attacker to cause denial-of-service (DoS) conditions by sending a crafted HTTP request.

References (1)

Core 1

Core References

Vendor Advisory

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-and-buffer-overflow-vulnerabilities-of-cpe-fiber-onts-and-wifi-extenders

Scores

CVSS v3 6.5

EPSS 0.0142

EPSS Percentile 80.7%

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 (48)

zyxel/ax7501-b0_firmware

zyxel/dx3301-t0_firmware

zyxel/dx4510-b1_firmware

zyxel/dx5401-b0_firmware

zyxel/emg3525-t50b_firmware

zyxel/emg5523-t50b_firmware

zyxel/emg5723-t50k_firmware

zyxel/ex3301-t0_firmware

zyxel/ex3510-b0_firmware < 5.17\(abup.7\)c0

zyxel/ex5401-b0_firmware

... and 38 more

Published Jan 11, 2023

Tracked Since Feb 18, 2026