CVE-2009-4186

CVE-2009-4186 describes a stack consumption vulnerability in Apple Safari 4.0.3 on Windows, allowing remote attackers to trigger a denial of service by providing an excessively long URI within a CSS background property. This vulnerability carries a critical CVSS score of 9.3, indicating a high potential for impact, as it can be exploited remotely with medium attack complexity to achieve complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, exploit code is publicly available on ExploitDB, though there is no evidence of active exploitation, Metasploit modules, or significant community discussion or media coverage.