CVE-2026-10828

Externally Controlled Format String Vulnerability in Moxa NPort Serial Parameter Configuration

Published Jun 16, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Description
A format string vulnerability has been found in the "alias" parameter of the Serial Param configuration page in the NPort W2150A-W4/W2250A-W4 Series version 1.5 and prior. This vulnerability stems from insufficient input validation and improper handling of externally supplied format strings. An attacker could exploit this vulnerability by sending crafted input to the web service, causing unintended memory disclosure. Successful exploitation may allow an attacker to leak sensitive memory contents and determine critical memory addresses, potentially bypassing Address Space Layout Randomization (ASLR) protections.

Remediation

Vendor Solution

Please refer to the security advisory: https://www.moxa.com/en/support/product-support/security-advisory/mpsa-261910-cve-2026-10828,-cve-2026-10829-use-of-externally-controlled-format-string-and-stack-based-buffer-overflow-v

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Externally Controlled Format String Vulnerability in Moxa NPort Serial Parameter Configuration
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A format string vulnerability has been found in the "alias" parameter of the Serial Param configuration page in the NPort W2150A-W4/W2250A-W4 Series version 1.5 and prior. This vulnerability stems from insufficient input validation and improper handling of externally supplied format strings. An attacker could exploit this vulnerability by sending crafted input to the web service, causing unintended memory disclosure. Successful exploitation may allow an attacker to leak sensitive memory contents and determine critical memory addresses, potentially bypassing Address Space Layout Randomization (ASLR) protections.
First Time appeared Moxa
Moxa nport W2150a-w4 W2250a-w4 Series
Moxa nport W2150a W2250a Series
Weaknesses CWE-134
CPEs cpe:2.3:a:moxa:nport_w2150a-w4_w2250a-w4_series:*:*:*:*:*:*:*:*
cpe:2.3:a:moxa:nport_w2150a_w2250a_series:*:*:*:*:*:*:*:*
Vendors & Products Moxa
Moxa nport W2150a-w4 W2250a-w4 Series
Moxa nport W2150a W2250a Series
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Moxa
Published
Updated
Jun 16, 2026, 12:20 PM
Reserved
Jun 4, 2026, 9:42 AM
Status
Awaiting Analysis
Published
Jun 16, 2026, 12:16 PM
Modified
Jun 17, 2026, 10:12 AM