CVE-2023-43208

CRITICALNVD 9.89.8—Trending — 4 sources updated this weekExploited in the wild

9.8

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.

CVSS v3: 9.8
EG Score: 9.8(high)
EPSS: 100.0%
KEV: ⚠ Exploited

Published

October 26, 2023

Last Modified

October 31, 2025

Advisory Details (2)

Auto-updated Jun 1, 2026

⚠️ Active exploitation confirmed. Patch available. Sources: cisa.

cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43208

generic

NextGen Mirth Connect RCE | Horizon3.ai

https://www.horizon3.ai/nextgen-mirth-connect-remote-code-execution-vulnerability-cve-2023-43208/

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 22:08 UTCEG score recompute
2026-06-04 22:08 UTCGHSA enrichment
2026-06-04 18:30 UTCEG score recompute
2026-06-04 18:30 UTCGHSA enrichment
2026-06-04 14:52 UTCEG score recompute
2026-06-04 14:52 UTCGHSA enrichment
2026-06-04 13:11 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-04 11:14 UTCEG score recompute
2026-06-04 11:14 UTCGHSA enrichment
2026-06-04 07:36 UTCEG score recompute
2026-06-04 07:36 UTCGHSA enrichment
2026-06-04 03:58 UTCEG score recompute
2026-06-04 03:58 UTCGHSA enrichment
2026-06-04 00:20 UTCEG score recompute
2026-06-04 00:20 UTCGHSA enrichment
2026-06-03 20:42 UTCEG score recompute
2026-06-03 20:42 UTCGHSA enrichment
2026-06-03 19:09 UTCkev_newly_listed
2026-06-03 17:04 UTCEG score recompute

Publicly available exploits

(8 references)

Working exploit code is in the public domain (1 Metasploit module) (6 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCaz4rvs/Mirth-Connect-CVE-2023-43208
First seen Feb 26, 2026
Python implementation of CVE-2023-43208 Mirth Connect RCE (Unauth XStream)
Open source ↗
GitHub PoCMKIRAHMET/PoC-2023-43208
First seen Feb 24, 2026
A proof-of-concept exploit for CVE-2023-43208, a remote code execution vulnerability in Mirth Connect before version 4.4.1.
Open source ↗
GitHub PoCkyakei/CVE-2023-43208
First seen Feb 22, 2026
CVE-2023-43208: Mirth Connect Pre-Auth RCE PoC
Open source ↗
GitHub PoCAvento/CVE-2023-43208_Detection_PoC
First seen Nov 28, 2024
Use java.net.InetAddress for detection
Open source ↗
GitHub PoCjakabakos/CVE-2023-43208-mirth-connect-rce-poc
First seen Mar 17, 2024
Open source ↗
GitHub PoCK3ysTr0K3R/CVE-2023-43208-EXPLOIT
First seen Mar 15, 2024
A PoC exploit for CVE-2023-43208 - Mirth Connect Remote Code Execution (RCE)
Open source ↗
Metasploitexploit/multi/http/mirth_connect_cve_2023_43208✓ verified
First seen Oct 25, 2023
Mirth Connect Deserialization RCE
Open source ↗
Nucleihttp/cves/2023/CVE-2023-43208.yaml
First seen Jan 1, 2023
NextGen Healthcare Mirth Connect - Remote Code Execution
Open source ↗

Frequently asked(6)

What is CVE-2023-43208?

CVE-2023-43208 is a critical vulnerability published on October 26, 2023. 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.

When was CVE-2023-43208 disclosed?

CVE-2023-43208 was first published in the National Vulnerability Database on October 26, 2023, with the most recent update on October 31, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-43208 actively exploited?

Yes. CISA added CVE-2023-43208 to the Known Exploited Vulnerabilities catalog on May 20, 2024, affecting NextGen Healthcare Mirth Connect. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2023-43208?

CVE-2023-43208 has a CVSS v3 base score of 9.8 (NVD).

Which products are affected by CVE-2023-43208?

CVE-2023-43208 affects NextGen Healthcare Mirth Connect. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2023-43208?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-43208, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-43208

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CVE-2023-43208

📅 Published

🔄 Last Modified

📋 Advisory Details (2)