CVE-2023-43208
NextGen Healthcare Mirth Connect Deserialization of Untrusted Data Vulnerability
Published Oct 26, 2023 · corrected/updated Jun 16, 2026 · nextgen mirth connect · evidence confidence very high
NextGen Healthcare Mirth Connect before version 4.4.1 is vulnerable to unauthenticated remote code execution. Note that this vulnerability is caused by the incomplete patch of CVE-2023-37679.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2023-43208 is a critical public vulnerability record for nextgen mirth connect. CISA lists it as known exploited. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether nextgen mirth connect is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: nextgen/mirth connect; NextGen Healthcare Mirth Connect. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 9.8, EPSS 82.7%. CISA lists it as known exploited. Weakness classes: CWE-502, CWE-78. Sources contributing to this record: cisa_kev, cve_org, epss, metasploit. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Confirmed in CISA KEV since May 20, 2024. Listed in the CISA Known Exploited Vulnerabilities catalog.
Patch and remediation
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA due date Jun 10, 2024.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Oct 26, 2023 · Catalog
Detected
NextGen Healthcare Mirth Connect before version 4.4.1 is vulnerable to unauthenticated remote code execution. Note that this vulnerability is caused by the incomplete patch of CVE-2023-37679.
May 20, 2024 · CISA KEV
Known exploited
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Jun 10, 2024 · CISA KEV
Remediation due
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Jun 16, 2026 · Catalog
Updated
NextGen Healthcare Mirth Connect before version 4.4.1 is vulnerable to unauthenticated remote code execution. Note that this vulnerability is caused by the incomplete patch of CVE-2023-37679.
Affected
- cpe nextgen/mirth connectversion unspecified
- vendor NextGen Healthcare Mirth Connectversion unspecified
Sources
- CISA KEVConfirmed exploitationCVE-2023-43208
NextGen Healthcare Mirth Connect contains a deserialization of untrusted data vulnerability that allows for unauthenticated remote code execution via a specially crafted request.
cisa.gov - CVE.orgVulnerability recordCVE-2023-43208
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2023-43208
30-day exploitation probability 82.7%
first.org - Metasploit ModulesPublic exploit moduleexploit_multi/http/mirth_connect_cve_2023_43208
Public module reference (excellent). Module source is not copied into this catalog.
rapid7.com - NIST NVDVulnerability recordCVE-2023-43208
NextGen Healthcare Mirth Connect before version 4.4.1 is vulnerable to unauthenticated remote code execution. Note that this vulnerability is caused by the incomplete patch of CVE-2023-37679.
nvd.nist.gov - Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/176920/Mirth-Connect-4.4.0-Remote-Command-Execution.html
Packet Storm link already published on the finding.
packetstormsecurity.com