CVE-2026-31851

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:nexxtsolutions:nebula300plus_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:nexxtsolutions:nebula300plus:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-23 13:16

Updated : 2026-06-17 10:34

NVD link : CVE-2026-31851

Mitre link : CVE-2026-31851

CVE.ORG link : CVE-2026-31851

JSON object : View

Products Affected

nexxtsolutions

nebula300plus_firmware
nebula300plus

CWE

CWE-307

Improper Restriction of Excessive Authentication Attempts

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