High severity · published Dec 31, 2025
CVE-2025-1977
The NPort 6100-G2/6200-G2 Series is affected by an execution with unnecessary privileges vulnerability (CVE-2025-1977) that allows an authenticated user with read-only access to…
7.7
CVSS
0.3%
EPSS
No
On KEV
Description
The NPort 6100-G2/6200-G2 Series is affected by an execution with unnecessary privileges vulnerability (CVE-2025-1977) that allows an authenticated user with read-only access to perform unauthorized configuration changes through the MCC (Moxa CLI Configuration) tool. The issue can be exploited remotely over the network with low-attack complexity and no user interaction but requires specific system conditions or configurations to be present. Successful exploitation may result in changes to device settings that were not intended to be permitted for the affected user role, potentially leading to a high impact on the confidentiality, integrity, and availability of the device. No impact on other systems has been identified.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N6
NPort 6100-G2/6200-G2 Series · Moxa
1.0.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-1977
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-1977
www.moxa.com
https://www.moxa.com/en/support/product-support/security-advisory/mpsa-251731-cve-2025-1977-cve-2025-2026-multiple-vulnerabilities-in-nport-6100-g2-6200-g2-series
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