Heap-based buffer overflow in the WordPerfect 5.x reader (wosr.dll), as used in Autonomy KeyView 10.4 and 10.9 and possibly other products, allows remote attackers to execute arbitrary code via unspecified vectors related to "data blocks."
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.