usp10.dll in the Unicode Scripts Processor in Microsoft Windows XP SP2 and SP3 and Windows Server 2003 SP2 allows remote attackers to execute arbitrary code via a crafted OpenType font, aka "Uniscribe Font Parsing Engine Memory Corruption Vulnerability."
Improper Restriction of Operations within the Bounds of a Memory Buffer The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.