Answer in brief
CVE-2026-31851 records a Unknown severity vulnerability in Nexxt Nebula 300+ - Lack of Rate Limiting Enables Brute-Force Attacks. The current sources do not mark it as known exploited. The current feed maps Nexxt Solutions/Nebula 300+ (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Nexxt Solutions/Nebula 300+ (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Nexxt Solutions/Nebula 300+generic | <= 12.01.01.37 | Not reported |
Published upstream
Mar 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-31851 records a Unknown severity vulnerability in Nexxt Nebula 300+ - Lack of Rate Limiting Enables Brute-Force Attacks. The current sources do not mark it as known exploited. The current feed maps Nexxt Solutions/Nebula 300+ (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Nexxt Solutions/Nebula 300+ (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Nexxt Solutions/Nebula 300+generic | <= 12.01.01.37 | Not reported |
Published upstream
Mar 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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.
Quoted source text, attributed separately from HOL analysis.