CVE-2023-1748
published 2023-04-04CVE-2023-1748: 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…
PriorityP267critical10CVSS 3.1
AVNACLPRNUINSCCHIHAH
EPSS
0.83%
52.8th percentile
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.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| getnexx | nxal-100_firmware | <= nxal100v-p1-9-1 | — |
| getnexx | nxg-100b_firmware | <= nxg100bv-p3-4-1 | — |
| getnexx | nxg-200_firmware | <= nxg200v-p3-4-1 | — |
| getnexx | nxpg-100w_firmware | <= nxpg100cv4-0-0 | — |
| nexx | smart_alarm_nxal-100 | <= nxal100v-p1-9-1 | — |
| nexx | smart_plug_nxpg-100w | <= nxpg100cv4-0-0 | — |
Detection & IOCsextracted from sources · hover to see the quote
- →Devices use hard-coded credentials accessible via the Nexx Home mobile application or affected firmware; monitor for unauthorized MQTT connections using credentials extracted from the app or firmware ↗
- →Monitor MQTT broker for unauthenticated or anomalous connections from external/internet-facing sources targeting Nexx garage door controllers (NXG-100B, NXG-200) firmware nxg200v-p3-4-1 and prior, smart plugs (NXPG-100W) firmware nxpg100cv4-0-0 and prior, and smart alarms (NXAL-100) firmware nxal100v-p1-9-1 and prior ↗
- →Block or alert on inbound MQTT traffic from the internet to Nexx devices; these devices should not be internet-accessible ↗
- ·Hard-coded credentials are embedded in the Nexx Home mobile application and affected device firmware; extraction requires reverse engineering the app or firmware images for the specific affected versions ↗
- ·No known public exploits specifically targeting this vulnerability were identified at time of advisory publication ↗
- ·Vendor (Nexx) has not responded to CISA mitigation requests; no vendor patch is available; defensive network controls are the primary mitigation ↗
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
GHSA-jj5g-444x-7r89: The listed versions of Nexx Smart Home devices use hard-coded credentials
ghsa_unreviewed·2023-04-04
CVE-2023-1748 [CRITICAL] CWE-798 GHSA-jj5g-444x-7r89: The listed versions of Nexx Smart Home devices use hard-coded credentials
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.
CISA ICS
Nexx Smart Home Device
cisa_ics·2023-04-04·CVSS 9.3
[CRITICAL] Nexx Smart Home Device
ICS Advisory
##
Nexx Smart Home Device
Release DateApril 04, 2023
Alert CodeICSA-23-094-01
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.3
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Nexx
- Equipment: Garage Door Controller, Smart Plug, Smart Alarm
- Vulnerabilities: Use of Hard-coded Credentials, Authorization Bypass through User-controlled Key, Improper Input Validation, Improper Authentication
## 2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to receive sensitive information, execute application programmable interface (API) requests, or hijack devices.
## 3. TECHNICAL DETAILS
## 3.1 AFFECTED PRODUCTS
The following versions of Nexx Smart Home devices are affected:
- Nexx Garage Door Controller (
No detection rules found.
No public exploits indexed.
2023-04-04
Published