CVE-2023-37679
CriticalExploitedPublic exploitA remote command execution (RCE) vulnerability in NextGen Mirth Connect v4.3.0 allows attackers to execute arbitrary commands on the hosting server.
Published Aug 3, 2023 · Updated Aug 12, 2026
Key Facts
Patch immediately- CVE-2023-37679 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Mirth Connect (Nextgen).
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Apr 19, 2024 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 99% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
99%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2023-37679 brief as a PDF
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Description
A remote command execution (RCE) vulnerability in NextGen Mirth Connect v4.3.0 allows attackers to execute arbitrary commands on the hosting server.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Apr 19, 2024 | n/a | Known |
| CIRCL KEV | May 25, 2024 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Mirth ConnectNextgen | 4.3.0 | n/a |
Timeline
Publicly disclosed
Aug 3, 2023
Added to Industry KEV feed
Apr 19, 2024
Added to CIRCL KEV
May 25, 2024
Last updated
Aug 12, 2026
Weakness Type
- CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
References
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2023/37xxx/CVE-2023-37679.json
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2023-37679
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
A remote command execution (RCE) vulnerability in NextGen Mirth Connect v4.3.0 allows attackers to execute arbitrary commands on the hosting server.
Affected: Mirth Connect (Nextgen) versions 4.3.0. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Apr 19, 2024 and is known to be used in ransomware campaigns.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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