CVE-2023-43208
NextGen Healthcare Mirth Connect Deserialization of Untrusted Data Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 10 June 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 85.42% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 20 May 2024 · due 10 June 2024 · used in ransomware campaigns
- Weakness
- CWE-78, CWE-502
- Affected
- nextgen/mirth connect
- Source
- cve@mitre.org
EPSS moved from 85.4% on 26 October 2026 to 85.4% on 30 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://github.com/nextgenhealthcare/connect/wiki/4.4.1---What%27s-New ; https://nvd.nist.gov/vuln/detail/CVE-2023-43208
References
- http://packetstormsecurity.com/files/176920/Mirth-Connect-4.4.0-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://www.horizon3.ai/nextgen-mirth-connect-remote-code-execution-vulnerability-cve-2023-43208/Exploit, Third Party Advisory
- http://packetstormsecurity.com/files/176920/Mirth-Connect-4.4.0-Remote-Command-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://www.horizon3.ai/nextgen-mirth-connect-remote-code-execution-vulnerability-cve-2023-43208/Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43208US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.