This report provides a comprehensive analysis of the Heartbleed vulnerability, a critical flaw in the OpenSSL cryptographic software library. The executive summary highlights the vulnerability's impact, allowing unauthorized access to sensitive information on a significant percentage of HTTPS sites. The technical description details the exploitation process, focusing on the manipulation of heartbeat requests within the TLS module. It outlines the attack vectors, including the parameters involved and the step-by-step process attackers use to extract data from the server's memory. The report also covers mitigation strategies, such as upgrading to secure OpenSSL versions and using vulnerability detection tools. Remediation steps include using strong passwords, regenerating private keys, and revoking certificates. This analysis underscores the importance of understanding and addressing this vulnerability to protect data and ensure system security.