CVE-2023-1749

published 2023-04-04 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-23970

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits: 0; none known

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-094-01 updated 2023-04-04 cvss 6.5

Nexx Smart Home Device

Nexx Garage Door Controller (NXG-100B, NXG-200) <= nxg200v-p3-4-1 Nexx Smart Alarm (NXAL-100) <= nxal100v-p1-9-1and Nexx Smart Plug (NXPG-100W) <= nxpg100cv4-0-0
affected: vendor fix getnexx.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 21 mo ago (2025-01-16)

Exploit prediction

0.50% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected products

Nexx Smart Alarm NXAL-100
Nexx Smart Plug NXPG-100W
Nexx Garage Door Controller NXG-100B, NXG-200

Classification

Weakness

CWE-639 Authorization Bypass Through User-Controlled Key

References

cisa.gov /news-events/ics-advisories/icsa-23-094-01
third-party-advisory, us-government-resource

Sources

CVE List CVE-2023-1749
NVD CVE-2023-1749

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary