CVE-2026-31851CRITICAL 9.8EPSS p24.9%

CVE-2026-31851CVE-2026-31851

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.33% probability of exploitation · percentile 24.9% · 2026-06-18T12:00:27Z
Published2026-03-23
Last modified2026-04-29

Underlying weaknesses· 1

CWE-307

References

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

1

TypeTargetConfidenceTier
WeaknessImproper Restriction of Excessive Authentication Attemptscwe-3070%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2026-31848
CVE
CVE-2026-31847
CVE
CVE-2026-24436
CVE
CVE-2026-41037
CVE
CVE-2025-27449
CVE
CVE-2025-52376
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.