This bug is for Oracle Critical Patch Update Advisory - October 2012 that lists 14 MySQL flaws: http://www.oracle.com/technetwork/topics/security/cpuoct2012-1515893.html#AppendixMSQL Fixes for these issues are included in versions 5.1.66 and 5.5.28. Previous CPU for MySQL was released in July 2012 and covered issues up to versions 5.1.63 and 5.5.24 (see bug 832540, comment 5). Hence these are releases since the last CPU: http://dev.mysql.com/doc/refman/5.1/en/news-5-1-64.html http://dev.mysql.com/doc/refman/5.1/en/news-5-1-65.html http://dev.mysql.com/doc/refman/5.1/en/news-5-1-66.html http://dev.mysql.com/doc/refman/5.5/en/news-5-5-25.html http://dev.mysql.com/doc/refman/5.5/en/news-5-5-25a.html http://dev.mysql.com/doc/refman/5.5/en/news-5-5-26.html http://dev.mysql.com/doc/refman/5.5/en/news-5-5-27.html http://dev.mysql.com/doc/refman/5.5/en/news-5-5-28.html