CVE-2003-0301

CVE-2003-0301 describes a denial-of-service vulnerability in Microsoft Outlook Express 6.00.2800.1106. Remote malicious IMAP servers can exploit this by sending specially crafted large literal size values, leading to integer signedness or overflow errors that crash the client. The vulnerability has a CVSS score of 5.0, indicating a medium severity, and can be exploited with low attack complexity over the network without authentication, resulting in partial availability impact. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Despite its age, the CVE has garnered some community discussion, with 10 mentions, primarily on GitHub.