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Vulnerability record · CVE-2023-1257 · published 7 March 2023

CVE-2023-1257: Moxa uc-2101-lx firmware vulnerability

Moxa · Uc 2101 Lx Firmware

An attacker with physical access to the affected Moxa UC Series devices can initiate a restart of the device and gain access to its BIOS. Command line options can then be altered, allowing the attacker to access the terminal. From the terminal, the attacker can modify the device’s authentication files to create a new user and gain full access to the system.

6.8 CVSS 3.1 Medium EPSS 0.32% · top 77.1%
6.8CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
54Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

An attacker with physical access to the affected Moxa UC Series devices can initiate a restart of the device and gain access to its BIOS. Command line options can then be altered, allowing the attacker to access the terminal. From the terminal, the attacker can modify the device’s authentication files to create a new user and gain full access to the system.

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

54 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.cisa.gov/uscert/ics/advisories/icsa-22-333-04 Third Party AdvisoryUS Government Resource
https://www.cisa.gov/uscert/ics/advisories/icsa-22-333-04 Third Party AdvisoryUS Government Resource

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2022-3088Moxa uc-2101-lx firmware execution with unnecessary privileges vulnerabilityUC-8100A-ME-T System Image: Versions v1.0 to v1.6, UC-2100 System Image: Versions v1.0 to v1.12, UC-2100-W System Image: Versions v1.0 to v 1.12,&nbs…EPSS 0.20%7.6CVE-2022-3086Moxa uc-8580-t-lx firmware command injection vulnerabilityCradlepoint IBR600 NCOS versions 6.5.0.160bc2e and prior are vulnerable to shell escape, which enables local attackers with non-superuser credentials…EPSS 0.32%

Source: NIST National Vulnerability Database (record CVE-2023-1257), CISA KEV, FIRST EPSS (scores of 2026-10-15). This page is refreshed as NVD updates the record.