CVE-2025-52376CRITICAL 9.8EPSS p94.7%

CVE-2025-52376CVE-2025-52376

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS9.14% probability of exploitation · percentile 94.7% · 2026-06-18T12:00:27Z
Published2025-07-15
Last modified2026-04-15

Underlying weaknesses· 2

CWE-287CWE-798

References

  1. https://github.com/Vagebondcur/nexxt-solutions-NCM-X1800-exploits
  2. https://github.com/Vagebondcur/nexxt-solutions-NCM-X1800-exploits/blob/main/CVE-2025-52376/writeup.md

2

TypeTargetConfidenceTier
WeaknessImproper Authenticationcwe-2870%live
WeaknessUse of Hard-coded Credentialscwe-7980%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2025-28202
CVE
CVE-2025-13184
CVE
CVE-2025-15517
CVE
CVE-2025-50526
CVE
CVE-2026-31847
CVE
CVE-2025-0890
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.