What is CVE-2025-52376?

CVE-2025-52376 is a critical-severity vulnerability in N/a, classified under Improper Authentication. CVSS score: 9.8/10. Published 2025-07-15.

How severe is CVE-2025-52376?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-52376 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in N/a

CVE-2025-52376

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.

Vulnerability class: Broken Authentication

EPSS: 0.091 (94.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

N/a — versions n/a

Weakness classification (CWE)

Public proof-of-concept exploits

Vagebondcur/nexxt-solutions-NCM-X1800-exploits

References

Frequently asked questions

What is CVE-2025-52376?: CVE-2025-52376 is a critical-severity vulnerability in N/a, classified under Improper Authentication. CVSS score: 9.8/10. Published 2025-07-15.
How severe is CVE-2025-52376?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-52376 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.