A vulnerability in bash is affecting all kinds of *nix systems and some Cisco collaboration products are affected.  Cisco has identified the vulnerable software and has either patched or is in the process of building patches.

The PSIRT is by far the best place to look for vulnerable software as well as to look at each BugID to find patched software

Look under Affected Products | Vulnerable Products for the official list.  Currently (10/13) is shows:

Voice and Unified Communications Devices

Some of the high priority links I’ve been asked for:

CUCM/CUC 10.5 –

CUCM/CUC 9.1 –