Definition of unpatched in English:
(Especially of a computer routine or program) not provided with a patch.
- That's it really - no firewall misconfigurations, unpatched operating system problems or even a Microsoft Internet Information Server problem in sight.
- The Witty worm started spreading in March 2004, infecting unpatched computer systems and appliances running security gateway software from network protection firm Internet Security Systems.
- A new Windows worm has been hitting unpatched Windows 2000 computers en masse - and causing blushes at several media organisations along the way.