CVE-2023-1748: The listed versions of Nexx Smart Home devices use hard-coded credentials

Q: How do I fix CVE-2023-1748?

nxal-100 firmware: upgrade to newer than nxal100v-p1-9-1; nxg-100b firmware: upgrade to newer than nxg100bv-p3-4-1; nxpg-100w firmware: upgrade to newer than nxpg100cv4-0-0. Exact commands for each OS are on this page.

Q: Is CVE-2023-1748 being exploited?

CVE-2023-1748 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-1748 affect?

CVE-2023-1748 affects nxal-100 firmware, nxg-100b firmware, nxpg-100w firmware. Severity is critical (CVSS 9.3). The listed versions of Nexx Smart Home devices use hard-coded credentials. An attacker with unauthenticated access to the Nexx Home mobile application or the affected firmware could view the credentials and access the MQ Telemetry Server (M

Q: How urgent is CVE-2023-1748?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.3REMOTEUPGRADEUPGRADEUPGRADE

CVE-2023-1748 is a critical-severity flaw (CVSS 9.3) affecting nxal-100 firmware, nxg-100b firmware, nxpg-100w firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The listed versions of Nexx Smart Home devices use hard-coded credentials. An attacker with unauthenticated access to the Nexx Home mobile application or the affected firmware could view the credentials and access the MQ Telemetry Server (MQTT) server and the ability to remotely control garage doors or smart plugs for any customer.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-798
Published	2023-04-04
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: getnexx

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

Am I affected?

Timeline

2023-04-04 17:15 UTCPublished CVE record published
2026-06-17 05:28 UTCUpdated Record last modified

getnexx nxal-100 firmware UPGRADE

Affected: <= nxal100v-p1-9-1

Fixed in: newer than nxal100v-p1-9-1

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.

getnexx nxg-100b firmware UPGRADE

Affected: <= nxg100bv-p3-4-1

Fixed in: newer than nxg100bv-p3-4-1

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.

getnexx nxpg-100w firmware UPGRADE

Affected: <= nxpg100cv4-0-0

Fixed in: newer than nxpg100cv4-0-0

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.

getnexx nxg-200 firmware UPGRADE

Affected: <= nxg200v-p3-4-1

Fixed in: newer than nxg200v-p3-4-1

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-2023-1748?

nxal-100 firmware: upgrade to newer than nxal100v-p1-9-1; nxg-100b firmware: upgrade to newer than nxg100bv-p3-4-1; nxpg-100w firmware: upgrade to newer than nxpg100cv4-0-0. Exact commands for each OS are on this page.

Is CVE-2023-1748 being exploited?

CVE-2023-1748 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-2023-1748 affect?

CVE-2023-1748 affects nxal-100 firmware, nxg-100b firmware, nxpg-100w firmware. Severity is critical (CVSS 9.3). The listed versions of Nexx Smart Home devices use hard-coded credentials. An attacker with unauthenticated access to the Nexx Home mobile application or the affected firmware could view the credentials and access the MQ Telemetry Server (M

How urgent is CVE-2023-1748?

Priority 52/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-1752 HIGH 8.1 UPGRADE UPGRADE The listed versions of Nexx Smart Home devices could allow any user to register an already registered alarm or
CVE-2023-1751 HIGH 7.5 UPGRADE UPGRADE The listed versions of Nexx Smart Home devices use a WebSocket server that does not validate if the bearer tok
CVE-2023-1750 HIGH 7.1 UPGRADE UPGRADE The listed versions of Nexx Smart Home devices lack proper access control when executing actions
CVE-2023-1749 MEDIUM 6.5 UPGRADE UPGRADE The listed versions of Nexx Smart Home devices lack proper access control when executing actions

References

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