CVE-2026-31847
8.5
Vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow more
CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less
Source: 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c (Secondary)
Description
Hidden functionality in the /goform/setSysTools endpoint in Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 allows remote enablement of a Telnet service. By sending a crafted POST request with parameters such as telnetManageEn=true and telnetPwd, an authenticated attacker can activate a Telnet service on port 23. This exposes a privileged diagnostic interface that is not intended for external access and can be used to interact with the underlying system.
Affected (1)
Products: Nexxtsolutions: Nebula300plus Firmware
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| Up to 12.01.01.37 |
| Running on/with | Platform Versions |
|---|---|
Nexxtsolutions Nebula300plus | All versions |
References (2)
Source: 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Product
Source: 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Product
Timeline
No history available yet.