CVE-2026-31851
Received Received - Intake
Authentication Brute Force Vulnerability in Nexxt Nebula 300+ Firmware

Publication date: 2026-03-23

Last updated on: 2026-04-29

Assigner: 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c

Description
Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement rate limiting or account lockout mechanisms on authentication interfaces. An attacker can perform unlimited authentication attempts against endpoints that rely on credential validation, enabling brute-force attacks to guess administrative credentials without restriction.
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Meta Information
Published
2026-03-23
Last Modified
2026-04-29
Generated
2026-06-16
AI Q&A
2026-03-23
EPSS Evaluated
2026-06-15
NVD
EUVD
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
nexxtsolutions nebula300plus_firmware to 12.01.01.37 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-307 The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.
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Executive Summary

This vulnerability exists in Nexxt Solutions Nebula 300+ firmware versions up to 12.01.01.37. The issue is that the device does not implement rate limiting or account lockout mechanisms on its authentication interface.

Without rate limiting or account lockout, an attacker can repeatedly attempt to authenticate without restriction, potentially enabling brute force attacks to guess passwords or gain unauthorized access.

Impact Analysis

The lack of rate limiting and account lockout on the authentication interface can allow attackers to perform brute force attacks, which may lead to unauthorized access to the device.

Unauthorized access could compromise the security and integrity of the device and any network it is connected to, potentially leading to data breaches or further exploitation.

Compliance Impact

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