Skip to main content
CVE-2025-52376VulnerabilityPublished

CVE-2025-52376: n/a

Source CVE Database V5

0

Not known to be exploited · 13% EPSS · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 08:30 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
13.7% chance of exploitation in 30 days – higher than 96% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Jul 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

AI-suggested

Organizations should immediately inventory their network devices to identify any Nexxt Solutions NCM-X1800 Mesh Routers running firmware UV1.2.7 or earlier. Until an official patch is released, administrators should disable remote management interfaces, especially Telnet and HTTP access from untrusted networks. Network segmentation should be enforced to isolate vulnerable routers from critical systems and sensitive data. Implement strict firewall rules to block inbound traffic to the /web/um_open_telnet.cgi endpoint and Telnet ports (typically TCP 23). Monitoring network traffic for unusual Telnet activity or unexpected connections to the router can help detect exploitation attempts. If possible, replace affected devices with alternative hardware that does not have this vulnerability. Additionally, change any default or hard-coded credentials on the device, if accessible, to reduce risk. Organizations should maintain close contact with Nexxt Solutions for firmware updates and apply patches promptly once available. Employing intrusion detection systems (IDS) with signatures for this vulnerability can also aid in early detection.

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.

References

Community reviews

Loading reviews…