CVE-2026-31851 - Vulnerability Details - OpenCVE

Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout on the authentication interface.

Attack Vector Adjacent Network

Attack Complexity High

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Nexxt Solutions

Nebula 300+

unaffected

Version	Status	Constraints
`<= 12.01.01.37`	affected	—

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip
https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/

History

Mon, 23 Mar 2026 12:45:00 +0000

Type	Values Removed	Values Added
Description		Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout on the authentication interface.
Title		Lack of rate limiting allows brute-force attacks in Nexxt Nebula 300+
Weaknesses		CWE-307
References		https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/
Metrics		cvssV4_0 `{'score': 7.7, 'vector': 'CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: TuranSec

Published: 2026-03-23T12:21:54.907Z

Updated: 2026-03-23T12:21:54.907Z

Reserved: 2026-03-09T18:20:23.399Z

Link: CVE-2026-31851

Vulnrichment

No data.

NVD

Status : Awaiting Analysis

Published: 2026-03-23T13:16:30.960

Modified: 2026-03-23T14:31:37.267

Link: CVE-2026-31851

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-307

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