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[ CVE-2023-43208 · Published 26 Oct 2023 ]

NextGen Healthcare Mirth Connect Deserialization of Untrusted Data Vulnerability

Exploited · CISA KEV CVSS 9.8 EPSS 83%No fix listed yet

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2024-05-20
  • Known to be used in ransomware campaigns
  • EPSS: 83% chance of exploitation in the next 30 days (higher than 100% of CVEs)
  • Critical severity: CVSS 9.8

[ Description ]Official 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.

CISA: NextGen Healthcare Mirth Connect contains a deserialization of untrusted data vulnerability that allows for unauthenticated remote code execution via a specially crafted request.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 10 Jun 2024): Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References