Quick answers
- Is CVE-2026-111459 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-111459 being exploited in the wild.
- How severe is CVE-2026-111459?
- Informational severity, published 27 October 2026.
- Which products and versions are affected?
- Moxa Remote Connect Suite (MRC Client).
- Is there a fix for CVE-2026-111459?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-111459 attacked?
- It is attacked over the network or from the adjacent network, in a web application.
- Am I affected by CVE-2026-111459?
- Check whether you run Moxa Remote Connect Suite (MRC Client). Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an improper certificate validation flaw in MRC Client's communication with its server. An unauthenticated attacker with on-path access can conduct a man-in-the-middle attack by impersonating a trusted server, compromising confidentiality and integrity of communications between the client and server.
Affected products
- Moxa Remote Connect Suite (MRC Client)