Acronis True Image Windows Agent 1.0.0.54 and earlier, included in Acronis True Image Enterprise Server 9.5.0.8072 and the other True Image packages, allows remote attackers to cause a denial of service (crash) via a malformed packet to port 9876, which triggers a NULL pointer dereference.
https://exchange.xforce.ibmcloud.com/vulnerabilities/41070
http://www.vupen.com/english/advisories/2008/0812/references
http://www.securityfocus.com/bid/28169
http://www.securityfocus.com/archive/1/489362/100/0/threaded