CVE-2025-52376
Critical · 9.8CVSS
9.8
EPSS
13.8%
Published
Jul 15, 2025
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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