CVE-2023-43208
NextGen Healthcare Mirth Connect Deserialization of Untrusted Data Vulnerability
What is affected
| Vendor | NextGen Healthcare |
|---|---|
| Product | Mirth Connect |
| Weakness | CWE-502 |
The vulnerability
NextGen Healthcare Mirth Connect contains a deserialization of untrusted data vulnerability that allows for unauthenticated remote code execution via a specially crafted request.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
US federal civilian agencies were required to act by 10 June 2024 under BOD 22-01. The deadline is a compliance date, not a measure of severity — it says nothing about how dangerous the flaw is to anyone else.
Ransomware
CISA records this vulnerability as having been used in ransomware campaigns. That is a confirmed observation, not an assessment of likelihood.
Where this comes from
Every field on this page is taken from the CISA Known Exploited Vulnerabilities catalog, last synced 12 Nov 2026, 00:29. Nothing here is our own assessment. For the technical scoring, see the NVD record below.