Buffer overflow in the Mono.Math.BigInteger class in Mono 1.2.5.1 and earlier allows context-dependent attackers to execute arbitrary code via unspecified vectors related to Reduce in Montgomery-based Pow methods.
StaticFileHandler.cs in System.Web in Mono before 1.2.5.2, when running on Windows, allows remote attackers to obtain source code of sensitive files via a request containing a trailing (1) space or (2) dot, which is not properly handled by XSP.