high severity September 09, 2026 · 1 min read

CISA ICS Advisory: NextGen Healthcare Mirth Connect

Here’s what this advisory affects, and what to do about it.

Successful exploitation of these vulnerabilities could allow an attacker to exfiltrate date or cause a denial-of-service condition.

CISA ICS Advisory: NextGen Healthcare Mirth Connect

CISA published an ICS Medical Advisory on September 09, 2026, warning that multiple vulnerabilities in NextGen Healthcare Mirth Connect could allow attackers to exfiltrate data or cause a denial-of-service condition.

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Vulnerabilities in Mirth Connect interface engine

The advisory details flaws in NextGen Healthcare’s Mirth Connect, a widely used open-source healthcare integration engine for exchanging clinical and administrative data between healthcare systems. Successful exploitation of these vulnerabilities could allow an attacker to exfiltrate data or cause a denial-of-service condition. The advisory does not state whether the vulnerabilities have been exploited in the wild.

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Affected products

The advisory affects NextGen Healthcare Mirth Connect. It does not list specific version numbers or a precise affected version range in the provided details.

What to do

Determine whether your organisation uses Mirth Connect for healthcare data integration.
Review the full CISA advisory and any vendor guidance published by NextGen Healthcare for patch information.
Apply available updates or patches from the vendor as soon as they are released.
Implement network segmentation and access controls to limit exposure of Mirth Connect instances to untrusted networks.
Monitor the vendor’s security channel and CISA’s ICS Medical Advisories page for further updates.

Organisations operating healthcare integration platforms should treat this advisory as a prompt to verify their exposure and accelerate patching or compensating controls.

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Sources: CISA ICS Advisory

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