CVEvulnerability

CVE-2026-31847

8.5 HIGH Published 2026-03-23 Modified 2026-08-10 Official page ↗
Status
Modified
Published
2026-03-23
Last modified
2026-08-10
Assigner
309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
CVSS 4.0 (309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c)
8.5 HIGH — 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:X
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-912

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.

Affected configurations

• nexxtsolutions nebula300plus firmware (<= 12.01.01.37)

Related

Weakness · CWE (1)

  • CWE-912 Hidden Functionality weakness

References