CVE-2026-31851
HIGH EPSS 25.1%
Published Mar 23, 20263mo ago · Modified Jun 17, 20262w ago
7.7 CVSS 4.0
Published Mar 23, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Adjacent
Attack Complexity High
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
25.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-307
Affected Products 2
| Vendor | Product | Version | Range |
|---|---|---|---|
| nexxtsolutions | nebula300plus_firmware | * | ≤12.01.01.37 |
| nexxtsolutions | nebula300plus | * | any |
References 2
- nexxt-connectivity-frontend.s3.amazonaws.com https://nexxt-connectivity-frontend.s3.amazonaws.com/media/docs/Nebula300+_v12.01.01.37.zip
- nexxtsolutions.com https://www.nexxtsolutions.com/connectivity/internal-products/ARN02304U6/
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.