Secunia Research has discovered a vulnerability in Microsoft Office, which can be exploited by malicious people to compromise a user's system. The vulnerability is caused due to an integer overflow when processing the number of colours used in a bitmap image. This can be exploited to cause a heap-based buffer overflow via a specially crafted bitmap image. Successful exploitation may allow execution of arbitrary code.
7ac964e9487782914de260d54de860d87bab4cfc1cce6ada1a75a68e768c7a21