CVE-2023-2231: A vulnerability, which was classified as critical, was found in MAXTECH MAX-G866ac 0.4.1_TBRO_20160314

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CRITICAL 9.8REMOTEMITIGATE

CVE-2023-2231 is a critical-severity flaw (CVSS 9.8) affecting max-g866ac firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability, which was classified as critical, was found in MAXTECH MAX-G866ac 0.4.1_TBRO_20160314. This affects an unknown part of the component Remote Management. The manipulation leads to missing authentication. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-227001 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-306
Published	2023-04-21
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: max-tech

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

Am I affected?

Timeline

2023-04-21 15:15 UTCPublished CVE record published
2026-06-17 05:52 UTCUpdated Record last modified

max-tech max-g866ac firmware MITIGATE

Affected: 0.4.1_tbro_20160314

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.4.1_tbro_20160314

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-2023-2231?

max-g866ac firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-2231 being exploited?

CVE-2023-2231 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-2023-2231 affect?

CVE-2023-2231 affects max-g866ac firmware. Severity is critical (CVSS 9.8). A vulnerability, which was classified as critical, was found in MAXTECH MAX-G866ac 0.4.1_TBRO_20160314. This affects an unknown part of the component Remote Management. The manipulation leads to missing authentication. It is possible to ini

How urgent is CVE-2023-2231?

Priority 60/100. Critical severity; Remotely exploitable, no login, no user action

References

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