Description
A vulnerability exists in serial device servers where active debug code remains enabled in the UART interface. An attacker with physical access to the device can directly connect to the UART interface and, without authentication, user interaction, or execution conditions, gain unauthorized access to internal debug functionality. Exploitation is low complexity and allows an attacker to execute privileged operations and access sensitive system resources, resulting in a high impact to the confidentiality, integrity, and availability of the affected device. No security impact to external or dependent systems has been identified.
Scores
CVSS v4
7.0
EPSS
0.0005
EPSS Percentile
16.2%
CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-489
Status
published
Products (11)
Moxa/NPort 5000AI-M12 Series
1.0
Moxa/NPort 5100 Series
1.0
Moxa/NPort 5100A Series
1.0
Moxa/NPort 5200 Series
1.0
Moxa/NPort 5200A Series
1.0
Moxa/NPort 5400 Series
1.0
Moxa/NPort 5600 Series
1.0
Moxa/NPort 5600-DT Series
1.0
Moxa/NPort IA5000 Series
1.0
Moxa/NPort IA5000-G2 Series
1.0
... and 1 more
Published
Dec 31, 2025
Tracked Since
Feb 18, 2026