apt-get -s upgrade | grep "^Inst" | grep -i securi | awk -F " " {'print $2'} | xargs apt-get install
Adobe Flash 11.2.202.400 security update

http://helpx.adobe.com/security/products/flash-player/apsb14-18.html
Priority 3
http://helpx.adobe.com//security/severity-ratings.html