What do you mean by free?
If you mean by free that they are public domain and that you can do anything you want with them, no, they are not free!
In the case of fonts that are bundled with Adobe applications, you may use those fonts on the computer on which you have installed the software with which the fonts are bundled. You may embed such fonts in PDF, EPS, and PostScript files generated by that software and distribute said PDF, EPS, and PostScript files to others for display and print. For example, you may use Myriad Pro Bold (bundled with the Creative Suite programs) in a logo, export the logo to PDF, and distribute that PDF version of the logo to the entire world for them to view, print, or even use the logo as part of another creative work.
However, you may absolutely not distribute or use the fonts otherwise. For example, you cannot simply give the font files to a friend.
Similar restrictions apply to fonts distributed by Microsoft either as part of Windows or with their applications such as Microsoft Office.
- Dov