I would just like to point out that, for all the talk of routers being vunerable, routers in general use busybox, which in turn uses ash shell as the default shell. Most routers will not be vunerable unless bash was explicitly installed.
I was tracking the changelog for the QNAP one that I use and was pleased to see that they didn't take too long to patch it: http://www.qnap.com/i/en/product_x_down/firmware_log.php?kw=...
Your office printers are probably vulnerable to this bug. So are medical devices, SANs, network switches, IP phones, cars, SCADA systems ... you name the device, I can probably name a vendor that ships bash on it. Here are the Cisco and Juniper devices affected: http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10... http://tools.cisco.com/security/center/content/CiscoSecurity...