CVE-2004-0052

CVE-2004-0052 describes a bypass vulnerability affecting multiple content security gateway and antivirus products, including Clearswift, F-Secure, and Paul L. Daniels solutions. The flaw allows remote attackers to circumvent content restrictions by crafting MIME messages with non-standard or incorrectly used separator characters in MIME headers, fields, parameters, or values, which mail clients may interpret differently. With a CVSS score of 7.5, this vulnerability is considered high severity, requiring no authentication and having a low attack complexity, potentially leading to partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.