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CVE-2023-43208

NextGen Healthcare Mirth Connect Deserialization of Untrusted Data

9.8 CRITICALActively exploited (CISA KEV)Used in ransomwarePublic exploitEPSS 82.7%
  1. Published26 Oct 2023
  2. Added to CISA KEV20 May 2024
  3. Remediation due10 Jun 2024
Actively exploited (CISA KEV)

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

Added to KEV: 20 May 2024Federal remediation due: 10 Jun 2024Used in ransomware

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 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Nextgen Mirth Connect< 4.4.1

Remediation

Fixed in
Nextgen Mirth Connect≥ 4.4.1

References

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Frequently asked

Is CVE-2023-43208 being actively exploited?

Yes. CVE-2023-43208 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 20 May 2024. It has been used in ransomware campaigns.

How severe is CVE-2023-43208?

CVE-2023-43208 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 82.7% probability of exploitation.

Which products are affected by CVE-2023-43208?

Affected products include Nextgen Mirth Connect.

How do I fix CVE-2023-43208?

Upgrade affected software to a fixed version, for example Nextgen Mirth Connect 4.4.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-43208 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.