Nexxt Solutions Nebula 300+ up to 12.01.01.37 Configuration Backup credentials storage

Summaryinfo

A vulnerability was found in Nexxt Solutions Nebula 300+ up to 12.01.01.37 and classified as problematic. This issue affects some unknown processing of the component Configuration Backup Handler. Executing a manipulation can lead to credentials storage. This vulnerability is registered as CVE-2026-31850. The attack requires access to the local network. No exploit is available.

Detailsinfo

A vulnerability was found in Nexxt Solutions Nebula 300+ up to 12.01.01.37. It has been declared as problematic. This vulnerability affects an unknown code of the component Configuration Backup Handler. The manipulation with an unknown input leads to a credentials storage vulnerability. The CWE definition for the vulnerability is CWE-256. Storing a password in plaintext may result in a system compromise. As an impact it is known to affect confidentiality. CVE summarizes:

Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including administrative credentials and WiFi pre-shared keys, in plaintext within exported configuration backup files. These backup files can be obtained through legitimate functionality or other weaknesses and do not apply encryption or hashing, allowing attackers to directly extract sensitive information.

The weakness was published by Angel Barre. The advisory is available at nexxtsolutions.com. This vulnerability was named CVE-2026-31850 since 03/09/2026. The exploitation appears to be easy. The attack needs to be initiated within the local network. The exploitation requires an enhanced level of successful authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1552 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Nexxt Solutions

Name

• Nebula 300+

Version

• 12.01.01.0
• 12.01.01.1
• 12.01.01.2
• 12.01.01.3
• 12.01.01.4
• 12.01.01.5
• 12.01.01.6
• 12.01.01.7
• 12.01.01.8
• 12.01.01.9
• 12.01.01.10
• 12.01.01.11
• 12.01.01.12
• 12.01.01.13
• 12.01.01.14
• 12.01.01.15
• 12.01.01.16
• 12.01.01.17
• 12.01.01.18
• 12.01.01.19
• 12.01.01.20
• 12.01.01.21
• 12.01.01.22
• 12.01.01.23
• 12.01.01.24
• 12.01.01.25
• 12.01.01.26
• 12.01.01.27
• 12.01.01.28
• 12.01.01.29
• 12.01.01.30
• 12.01.01.31
• 12.01.01.32
• 12.01.01.33
• 12.01.01.34
• 12.01.01.35
• 12.01.01.36
• 12.01.01.37

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