# CVE-2023-43208: NextGen Healthcare Mirth Connect Deserialization of Untrusted Data Vulnerability

Source: https://junglewise.ai/threats/cve-2023-43208-nextgen-healthcare-mirth-connect-deserialization-of-untrusted  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2024-05-20. Updated: 2026-05-09  
License: CC BY 4.0 with a link back

CVE-2023-43208 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2024-05-20

NextGen Healthcare Mirth Connect is vulnerable to unauthenticated remote code execution due to the deserialization of untrusted data. This vulnerability stems from an incomplete patch for CVE-2023-37679 and allows an attacker to execute arbitrary commands via specially crafted requests.

## Quick answers

**Is CVE-2023-43208 exploited in the wild?** Yes. CVE-2023-43208 is known to be exploited in the wild, first recorded on 20 May 2024. Treat it as urgent.

**How severe is CVE-2023-43208?** Critical severity, with a CVSS score of 9.8, published 20 May 2024.

**Which products and versions are affected?** NextGen Healthcare Mirth Connect before 4.4.1.

**Is there a fix for CVE-2023-43208?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2023-43208 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2023-43208?** Check whether you run NextGen Healthcare Mirth Connect. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- NextGen Healthcare Mirth Connect before 4.4.1

## Timeline

- 2023-10-26: disclosed: NVD Published Date
- 2024-05-20: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2024-05-20: exploited: Reported as exploited in the wild in CISA KEV catalog