CVE-2025-52376 – Nexxt Solutions NCM-X1800 Mesh Router Telnet Authentication Bypass

The following table lists the changes that have been made to the
CVE-2025-52376 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Jul. 15, 2025

    Action Type Old Value New Value
    Added 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.
    Added Reference https://github.com/Vagebondcur/nexxt-solutions-NCM-X1800-exploits
    Added Reference https://github.com/Vagebondcur/nexxt-solutions-NCM-X1800-exploits/blob/main/CVE-2025-52376/writeup.md
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