CVE-2026-111459NVD

Vulnerability Summary

An improper certificate validation vulnerability exists in Moxa Remote Connect Suite (MRC Client). Under certain conditions, an unauthenticated attacker with on-path access to the communication between the MRC Client and its server could impersonate a trusted server and conduct a man-in-the-middle attack, potentially compromising the confidentiality and integrity of communications.

Severity Level

HIGH(7.6)

Published Date

Oct 27, 2026

Last Modified

Oct 27, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.17%Probability

Root Weakness (CWE)

CWE-295: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v4.0 Base Metrics — Score 7.6 (HIGH)

Attack VectorNetwork

Attack ComplexityLow

Attack RequirementsPresent

Privileges RequiredNone

User InteractionPassive

Confidentiality (Vulnerable System)High

Integrity (Vulnerable System)High

Availability (Vulnerable System)None

Confidentiality (Subsequent System)None

Integrity (Subsequent System)None

Availability (Subsequent System)None

Affected & Patched Versions

Affected Versions

Moxa Moxa Remote Connect Suite (MRC Client) >= 1.0.0 and <= 4.2.0

Patched Versions

Moxa Moxa Remote Connect Suite (MRC Client) 4.2.0

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