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Vulnerabilities

Vulnerability · CVE-2023-43208

NextGen Healthcare Mirth Connect Deserialization of Untrusted Data Vulnerability

Published Oct 26, 2023 · catalog updated Jun 16, 2026 · NextGen Healthcare Mirth Connect

Patch now

CVE-2023-43208 is in the CISA known-exploited catalog, due Jun 10, 2024. Confirm NextGen Healthcare Mirth Connect against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
82.71%
Remediation
Remediation guidance
Affected products
cpe nextgen/mirth connect · vendor NextGen Healthcare Mirth Connect

NextGen Healthcare Mirth Connect contains a deserialization of untrusted data vulnerability that allows for unauthenticated remote code execution via a specially crafted request. VulnCheck canary evidence. Initial-access exploit intelligence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe nextgen/mirth connectversion unspecified
  • vendor NextGen Healthcare Mirth Connectversion unspecified

How to fix CVE-2023-43208

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-43208 is in the CISA known-exploited catalog, due Jun 10, 2024. Confirm NextGen Healthcare Mirth Connect against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-502: Deserialization of Untrusted Data; CWE-78: OS Command Injection. EPSS 82.71%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 26, 2023 · Catalog

    Detected

    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.

  2. May 20, 2024 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  3. Jun 10, 2024 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  4. Jun 16, 2026 · Catalog

    Updated

    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

  • CISA KEVConfirmed exploitationCVE-2023-43208

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

    cisa.gov
  • CVE.orgVulnerability recordCVE-2023-43208

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-43208

    30-day exploitation probability 82.7%

    first.org
  • Metasploit ModulesPublic exploit moduleexploit_multi/http/mirth_connect_cve_2023_43208

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2023-43208

    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.

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/176920/Mirth-Connect-4.4.0-Remote-Command-Execution.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • VulnCheck KEVConfirmed exploitationCVE-2023-43208

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

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.