A detailed walkthrough demonstrates how a vulnerability in Mirth Connect version 4.4.0, specifically Java deserialization, can be exploited to achieve Remote Code Execution and gain initial access. This exploit chain, involving credential discovery, database access, and privilege escalation through template injection, highlights critical security weaknesses in legacy software. Developers and security professionals should be aware of such deserialization vulnerabilities and the importance of secure configuration management to prevent similar attacks.
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