"Discovered by Nils Emmerich, the flaw could allow an attacker to craft a malicious document that can silently execute arbitrary python commands without displaying any warning to a targeted user."

When attacks are able to execute without warning it can trick even the most tech savvy end users. Much like Operation Aurora, these can result in targeted spear phishing campaigns that will look to gain access to the inner parts of the perimeter and then move laterally to find high value assets.  By reducing the blast radius of the data center, segmentation can create a great amount of friction to thwart these types of attacks.