CVE 2012-1910

Bitcoin-Qt 0.5.0.x before; 0.5.1.x, 0.5.2.x, and 0.5.3.x before; and 0.6.x before 0.6.0rc4 on Windows does not use MinGW multithread-safe exception handling, which allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via crafted Bitcoin protocol messages.

See the CVE page on for more details.