CVE-2023-43208
Published: May 20, 2024
Official Description
NextGen Healthcare Mirth Connect contains a deserialization of untrusted data vulnerability that allows for unauthenticated remote code execution via a specially crafted request.
CISA KEV Advisory
NextGen Healthcare Mirth Connect Deserialization of Untrusted Data Vulnerability
NextGen Healthcare Mirth Connect contains a deserialization of untrusted data vulnerability that allows for unauthenticated remote code execution via a specially crafted request.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Risk Analysis
NextGen Healthcare Mirth Connect is vulnerable to deserialization of untrusted data, which allows an unauthenticated attacker to execute arbitrary code remotely. The very high EPSS score of 0.94416 indicates a significant likelihood of exploitation, making this a critical vulnerability.
This vulnerability is actively exploited in the wild and is listed in CISA's KEV catalog, confirming its confirmed exploitation. The unauthenticated remote code execution capability makes it highly dangerous.
Apply the latest security patches and updates for NextGen Healthcare Mirth Connect. Implement network segmentation and restrict access to the Mirth Connect instance to trusted sources.
Technical Analysis
CVE-2023-43208 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2023-43208 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-43208 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1