MediumOctober 27, 2026
Source: NVD

CVE-2026-111459: CVE-2026-111459 - An improper certificate validation vulnerability exists in Moxa Remote Connect Suite (MRC Client). Under certain conditions, an unauthentica...

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. This is a medium threat mapped to CVE-2026-111459; security leaders should validate exposure, prioritize patching, and verify compensating controls.

Related CVEs

CVE-2026-111459

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SecOps Recommended Triage Checklist

  • 01.Scope & Asset Discovery: Query vulnerability scanners (e.g. Tenable) and software bill of materials (SBOM) to pinpoint affected packages and services.
  • 02.Vendor Patch Application: Prioritize deployment of official security patches released by upstream vendors.
  • 03.Compensating Defense Controls: If patch cannot be applied immediately, enforce strict firewall/WAF boundaries and isolate target instances.
  • 04.Endpoint Behavioral Monitoring: Audit telemetry via EDR (e.g. CrowdStrike) for abnormal child processes or privilege escalation attempts.

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