CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2025-52376
Critical (9.8). EPSS 14% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 14% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-287, CWE-798
- Published
- Modified
- Record from
- the NVD, synced