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CVE-2026-31850: Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including admin

19
Routine
MEDIUM 4.9UPGRADE

CVE-2026-31850 is a medium-severity flaw (CVSS 4.9) affecting nebula300plus firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including administrative credentials and WiFi pre-shared keys, in plaintext within exported configuration backup files. These backup files can be obtained through legitimate functionality or other weaknesses and do not apply encryption or hashing, allowing attackers to directly extract sensitive information.

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score4.9 (Medium)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededHigh
User interactionNone
EPSS exploit chance0.2% (top 92%)
CISA exploited listNo
WeaknessCWE-256
Published2026-03-23
Last modified2026-06-17
Publisher (CNA): TuranSec · Vendor: nexxtsolutions

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

nexxtsolutions nebula300plus firmware UPGRADE
Affected: <= 12.01.01.37
Fixed in: newer than 12.01.01.37
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-31850?

nebula300plus firmware: upgrade to newer than 12.01.01.37. Exact commands for each OS are on this page.

Is CVE-2026-31850 being exploited?

CVE-2026-31850 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-31850 affect?

CVE-2026-31850 affects nebula300plus firmware. Severity is medium (CVSS 4.9). Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 stores sensitive information, including administrative credentials and WiFi pre-shared keys, in plaintext within exported configuration backup files. These backup files can be

How urgent is CVE-2026-31850?

Priority 19/100. No elevated risk signals yet.

Software pages

Wi-Fi vulnerabilities

Related CVEs

References

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