Unspecified vulnerability in the MySQL Server component in Oracle MySQL 5.5.26 and earlier, allows remote unauthenticated users to affect integrity and availability via unknown vectors related to MySQL client. References: [1] http://www.oracle.com/technetwork/topics/security/cpuoct2012-1515893.html
Text of the Oracle flaw description: Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: MySQL Client). Supported versions that are affected are 5.5.26 and earlier. Easily exploitable vulnerability allows successful unauthenticated network attacks via multiple protocols. Successful attack of this vulnerability can result in unauthorized update, insert or delete access to some MySQL Server accessible data and ability to cause a partial denial of service (partial DOS) of MySQL Server. http://www.oracle.com/technetwork/topics/security/cpuoct2012verbose-1515934.html#MSQL Upstream notes this issue only affected MySQL versions 5.5. Red Hat Enterprise Linux 5 and 6 include MySQL versions 5.0.x and 5.1.x respectively, which are not listed as affected. Current Fedora versions are already updated to fixed upstream version. Closing.