static void update_write_suppress_output(wStream* s, BYTE allow,
        const RECTANGLE_16* area)
{
	Stream_Write_UINT8(s, allow); /* allowDisplayUpdates (1 byte) */
	/* Use zeros for padding (like mstsc) for compatibility with legacy servers */
	Stream_Zero(s, 3); /* pad3Octets (3 bytes) */

	if (allow > 0)
	{
		Stream_Write_UINT16(s, area->left); /* left (2 bytes) */
		Stream_Write_UINT16(s, area->top); /* top (2 bytes) */
		Stream_Write_UINT16(s, area->right); /* right (2 bytes) */
		Stream_Write_UINT16(s, area->bottom); /* bottom (2 bytes) */
	}
}

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.