CVE-2023-1749: The listed versions of Nexx Smart Home devices lack proper access control when executing actions

Q: How do I fix CVE-2023-1749?

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-2023-1749 being exploited?

CVE-2023-1749 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-2023-1749 affect?

CVE-2023-1749 affects nxal-100 firmware, nxg-100b firmware, nxpg-100w firmware. Severity is medium (CVSS 6.5). The listed versions of Nexx Smart Home devices lack proper access control when executing actions. An attacker with a valid NexxHome deviceId could send API requests that the affected devices would execute.

Q: How urgent is CVE-2023-1749?

Priority 33/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADEUPGRADEUPGRADE

CVE-2023-1749 is a medium-severity flaw (CVSS 6.5) 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 lack proper access control when executing actions. An attacker with a valid NexxHome deviceId could send API requests that the affected devices would execute.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-639
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-2023-1749?

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-2023-1749 being exploited?

CVE-2023-1749 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-2023-1749 affect?

CVE-2023-1749 affects nxal-100 firmware, nxg-100b firmware, nxpg-100w firmware. Severity is medium (CVSS 6.5). The listed versions of Nexx Smart Home devices lack proper access control when executing actions. An attacker with a valid NexxHome deviceId could send API requests that the affected devices would execute.

How urgent is CVE-2023-1749?

Priority 33/100. No elevated risk signals yet.

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-2023-1748 CRITICAL 9.3 UPGRADE UPGRADE The listed versions of Nexx Smart Home devices use hard-coded credentials

References

← Back to latest CVEs