The vulnerability identified as CVE-2026-31850 affects the Nexxt Solutions Nebula 300+ firmware versions up to 12.01.01.37. This vulnerability allows sensitive information, including administrative credentials and WiFi pre-shared keys, to be stored in plaintext within exported configuration backup files. These backup files can be accessed through legitimate functionality or other weaknesses, as they lack encryption or hashing, enabling attackers to extract sensitive information directly.
With a CVSS score of 6.8, this vulnerability is classified as medium severity. Organizations are at risk of unauthorized access to sensitive information, which could lead to further exploitation of internal systems. The presence of plaintext credentials in backup files significantly increases the risk of a data breach if these files are compromised.
Currently, there is no known public exploit for this vulnerability, but the implications of its existence warrant immediate attention. Organizations using affected versions of the Nexxt Solutions Nebula 300+ firmware should prioritize remediation efforts to mitigate potential risks associated with this vulnerability.
Organizations should prioritize patching immediately. Regular security assessments can further help identify and address such vulnerabilities.
Vulnerability Details
The official description of this vulnerability states: "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." The vulnerability type is categorized under CWE-256, which pertains to incorrect default permissions.
The CVSS score is rated at 6.8, indicating a medium-level severity. The vulnerability primarily affects the Nexxt Solutions Nebula 300+ firmware and was published on March 23, 2026.
Technical Analysis
The root cause of this vulnerability stems from the storage of sensitive data in plaintext without applying proper encryption or hashing. This makes the information easily accessible to unauthorized individuals who can obtain the backup files. The attack vector is classified as adjacent, meaning attackers need to be on the same local network segment to exploit this vulnerability.
The attack complexity is low, and high privileges are required to access the sensitive information stored in these backup files. Additionally, user interaction is not required, as the files can be obtained through legitimate functionality. The confidentiality impact is high, with no integrity or availability impacts identified.
Risk & Impact Analysis
Risk to organizations includes potential unauthorized access to sensitive credentials, which could facilitate further attacks on internal systems. The vulnerability's exploitability is medium, indicating that while there is some complexity involved in exploiting it, the potential for risk is significant enough to warrant immediate remediation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of Nexxt Solutions Nebula 300+ firmware prior to version 12.01.01.37. Organizations should ensure that they are running the latest firmware to mitigate this risk.
Mitigation & Remediation
To mitigate this vulnerability, organizations should prioritize upgrading to the latest version of the Nexxt Solutions Nebula 300+ firmware. If immediate upgrading is not feasible, consider implementing additional security measures such as restricting access to the backup configuration files and applying strict policy controls around administrative credentials. Regularly reviewing network security configurations can also help in identifying and preventing unauthorized access. For further guidance, organizations can refer to our penetration testing services to validate their security posture.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor for unusual access patterns to configuration backup files. Log indicators of interest include unauthorized attempts to access sensitive data, changes to backup configurations, and abnormal network traffic patterns associated with adjacent network segments.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-31850 lies in the ongoing trend of vulnerabilities related to improper handling of sensitive data. This case highlights the importance of applying strong security controls to protect sensitive information, particularly in the context of networked devices. Security teams should learn from this incident to enhance their defensive strategies and build resilient systems. For more insights on securing your infrastructure, consider reviewing our vulnerability management program and our penetration testing methodology resources to improve your security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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