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Public proof of concept

CVE-2025-52376

A public proof of concept exists; no exploitation attested.

  • Published2025-07-15
  • WeaknessCWE-287 · CWE-798

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2025-07-1514:15CVE publishedNVD

Versions per branch

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2025-52376 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2025-07-15
Last Modified
2026-06-17
NVD status
Deferred
GitHub Advisory
GHSA-932h-pf5w-9584

Frequently asked questions

What is 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.

Is CVE-2025-52376 actively exploited?

A proof-of-concept exploit exists for CVE-2025-52376, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-52376?

CVE-2025-52376 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record