VULNERABILITY INTELLIGENCE

CVE-2025-52376

CVSS score9.8 CRITICAL

EPSS probability13.77%

CISA KEVNot currently listed

Published2025-07-15

Last modified2026-06-17

Description

An authentication bypass vulnerability in the /web/um_open_telnet.cgi endpoint in Nexxt Solutions NCM-X1800 Mesh Router firmware UV1.2.7 and below, allowing an attacker to remotely enable the Telnet service without authentication, bypassing security controls. The Telnet server is then accessible with hard-coded credentials, allowing attackers to gain administrative shell access and execute arbitrary commands on the device.