PatchSiren cyber security CVE debrief

CVE-2026-10829 Moxa CVE debrief

A stack-based buffer overflow vulnerability has been found in the NPort W2150A-W4/W2250A-W4 Series version 1.5 and earlier. This vulnerability stems from insufficient input validation of user-supplied input in the 'Server location' parameter on the Basic settings page. An attacker could exploit this vulnerability by sending crafted input to the web service, resulting in memory corruption. Successful exploitation of this vulnerability could allow remote code execution on the target system with root privileges.

Vendor: Moxa
Product: NPort W2150A-W4/W2250A-W4 Series
CVSS: HIGH 8.6
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-16
Original CVE updated: 2026-06-16
Advisory published: 2026-06-16
Advisory updated: 2026-06-16

Who should care

Administrators and users of NPort W2150A-W4/W2250A-W4 Series version 1.5 and earlier should be aware of this vulnerability and take necessary actions to mitigate the risk.

Technical summary

The vulnerability has a CVSS score of 8.6 and is classified as HIGH severity. The CVSS vector is CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

Defensive priority

HIGH

Recommended defensive actions

Apply patches or updates provided by the vendor to fix the vulnerability.
Restrict access to the web service to prevent unauthorized access.
Monitor the system for suspicious activity.

Evidence notes

The vendor is Moxa, as indicated by the evidence from reference_domain_candidate.

Sources and references

Verified primary and authoritative sources

CVE-2026-10829 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-10829

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-10829 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-10829

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Source reference
Unverified legacy reference

URL: 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

[email protected]

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.