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High 7.7Published Mar 23, 2026

CVE-2026-31851Nexxt Nebula 300+ - Lack of Rate Limiting Enables Brute-Force Attacks

Updated under an hour ago ()

Does this affect you?

It affects Nexxt Solutions Nebula 300+ and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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
7.7 HIGH (v4.0, CNA)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
Weakness (CWE)
CWE-307
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
TuranSec
NVD analysis
Analyzed
Record last updated
Aug 10, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
Nexxt Solutions Nebula 300+
nexxt_solutions:nebula_300+ (from the name)
through 12.01.01.37
CNA record
nexxtsolutions nebula300plus_firmware
nexxtsolutions:nebula300plus_firmware
through 12.01.01.37
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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