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Vulnerabilities

Vulnerability · CVE-2026-111459

Unauthenticated server-supplied OpenVPN configuration in Moxa Remote Connect Suite (MRC Client)

Published Oct 27, 2026 · catalog updated Oct 27, 2026 · Moxa Moxa Remote Connect Suite (MRC Client)

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-111459. EPSS is 0.17%. Act only if a listed version of Moxa Moxa Remote Connect Suite (MRC Client) is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.17%
Remediation
Advisory link
Affected products
vendor Moxa Moxa Remote Connect Suite (MRC Client)

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Moxa Moxa Remote Connect Suite (MRC Client)version unspecified

How to fix CVE-2026-111459

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-111459. EPSS is 0.17%. Act only if a listed version of Moxa Moxa Remote Connect Suite (MRC Client) is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-295: Improper Certificate Validation. EPSS 0.17%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 27, 2026 · Canadian Centre for Cyber Security

    Detected

    CVE-2026-111459 is listed by [Control Systems] Moxa security advisory (AV26-1089).

Sources

  • Canadian Centre for Cyber SecurityGovernment advisoryCVE-2026-111459

    Serial number: AV26-1089 Date: October 27, 2026 As of October 27, 2026, Moxa is affected by vulnerabilities in the following products: Moxa Remote Connect Suite (MRC Client) Prior to or equal to v4.2.0 OnCell G3150A-LTE Series All firmware versions The Cyber Centre encourages use

    cyber.gc.ca
  • CVE.orgVulnerability recordCVE-2026-111459

    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

    cve.org

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Canadian Centre for Cyber SecurityOct 30, 2026
  • CVE.orgOct 27, 2026