Use-after-free vulnerability in SumatraPDF Reader 2.x before 2.2.1 allows remote attackers to execute arbitrary code via a crafted PDF file.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2013-2769
https://docs.microsoft.com/en-us/security-updates/vulnerabilityresearchadvisories/2013/msvr13-005