CVE-2023-43208

CriticalPublished

NextGen Healthcare Mirth Connect Deserialization of Untrusted Data Vulnerability

Published: Oct 26, 2023
Updated: Oct 21, 2025
Assigning CNA: mitre
Evidence observed: May 20, 2024

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

82.7%

High · next 30 days

Percentile: 99.7%
Model date: Oct 17, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

CISA Known Exploited

This CVE appears in the CISA Known Exploited Vulnerabilities catalog.

Summary

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.

Sources

Repository evidence: Files: 2 · Repositories: 2

1 Module1 Template

Mirth Connect Deserialization RCEModule
modules/exploits/multi/http/mirth_connect_cve_2023_43208.rb
Metasploit Framework modules
ExploitEvidence observed: Sep 26, 2026Revision: b22ce1fbae63Related tool
Declared conditions
- platform: Linux,Unix,Windows($.exploit_multi/http/mirth_connect_cve_2023_43208.platform)
- verification: check_declared($.exploit_multi/http/mirth_connect_cve_2023_43208.check)
NextGen Healthcare Mirth Connect - Remote Code ExecutionTemplate
http/cves/2023/CVE-2023-43208.yaml
Nuclei Templates
DetectionEvidence observed: Sep 26, 2026Revision: 17f5725dc10cRelated tool
Declared conditions
- network: http($.protocol_keys)
- verification: dsl($.matchers[*].type)
- oob: interactsh_reference($.template_text)

Responsible use

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