CVE-2002-1840

CVE-2002-1840 describes a critical backdoor vulnerability present in irssi IRC client version 0.8.4, specifically in downloads made after March 14, 2002. This flaw allowed remote attackers to gain unauthorized access to affected systems through a compromised configuration file. With a CVSS score of 10.0, it represents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.