Vulnerability · Published Jul 15, 2025 · Assigned by mitre
CVE-2025-52376
Critical 9.8
In plain English
A critical-severity improper authentication in the affected software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 13.8% (higher than 97% of all known vulnerabilities).
Official 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.
Affected products (as reported)
Weakness: CWE-287, CWE-798 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H