IBM Lotus Symphony 3 before FP3 allows remote attackers to cause a denial of service (application crash) via a .docx document with empty bullet styles for parent bullets.
https://exchange.xforce.ibmcloud.com/vulnerabilities/68890
https://euvd.enisa.europa.eu/vulnerability/EUVD-2011-2860
http://www.securityfocus.com/bid/48936