An authentication bypass vulnerability in the /web/um_open_telnetcgi endpoint in Nexxt Solutions

链接： https://github.com/advisories/GHSA-932h-pf5w-9584

CVSS 评分： 9.8

参考链接：

• https://nvd.nist.gov/vuln/detail/CVE-2025-52376

• https://github.com/Vagebondcur/nexxt-solutions-NCM-X1800-exploits

• https://github.com/Vagebondcur/nexxt-solutions-NCM-X1800-exploits/blob/main/CVE-2025-52376/writeup.md

• https://github.com/advisories/GHSA-932h-pf5w-9584

描述：

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.