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Response snapshot Oct 27, 2026, 09:10 UTC

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VulnerabilityCVE-2026-111459

An improper certificate validation vulnerability exists in Moxa Remote Connect Suite (MRC Client).

An improper certificate validation vulnerability exists in Moxa Remote Connect Suite (MRC Client).

At a glance

Exploited
Not known
Severity
7.6 High (CVSS 4.0)
Chance of exploitation
Not estimated
Sources
1 source

What to do

Check the vendor advisory for affected versions and fixes.

Read NVD CVE-2026-111459 (opens a new tab)

What happened

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.

Scores and how they were measured

CVSS base severity

7.6

Version 4.0As of

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/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

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Sources

  1. Primary source

    NVD CVE-2026-111459 (opens a new tab)

    NVD record: description, CVSS (the CNA score is preferred), affected products, and publication date. Not evidence of exploitation.

    Published Checked

  2. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

  3. Primary source

    NVD CVE API 2.0 (opens a new tab)

    The NVD API page that supplied this CVE record.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, October 27). An improper certificate validation vulnerability exists in Moxa Remote Connect Suite (MRC Client). (CVE-2026-111459). https://kevwire.com/record/CVE-2026-111459

MLA

"An improper certificate validation vulnerability exists in Moxa Remote Connect Suite (MRC Client). (CVE-2026-111459)." KEVWire, 27 Oct. 2026, kevwire.com/record/CVE-2026-111459.

Chicago

KEVWire. "An improper certificate validation vulnerability exists in Moxa Remote Connect Suite (MRC Client). (CVE-2026-111459)." Last modified October 27, 2026. https://kevwire.com/record/CVE-2026-111459.

Evidence summary (plain text)

An improper certificate validation vulnerability exists in Moxa Remote Connect Suite (MRC Client). (Oct 27, 2026).
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.
CVSS 7.6 (version 4.0; evidence as of Oct 27, 2026; https://nvd.nist.gov/vuln/detail/CVE-2026-111459).
Sources:
NVD CVE-2026-111459: https://nvd.nist.gov/vuln/detail/CVE-2026-111459
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-10-27T07:20:57.107Z&lastModEndDate=2026-10-27T08:50:55.286Z&resultsPerPage=500&startIndex=0
NVD CVE API 2.0: https://services.nvd.nist.gov/rest/json/cves/2.0?lastModStartDate=2026-10-27T06:50:58.771Z&lastModEndDate=2026-10-27T08:20:55.396Z&resultsPerPage=500&startIndex=0
Record ID: CVE-2026-111459.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Oct 27, 2026, 08:50 UTC. Ingestion is not an independent editorial investigation.

NVD status: Received. Publication in the NVD is not evidence of exploitation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

Record JSON

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Record details

Record detail