The (1) server and (2) agent components in CA ARCserve Backup r12.5, r15, and r16 on Windows do not properly validate RPC requests, which allows remote attackers to cause a denial of service (service crash) via a crafted request.
https://exchange.xforce.ibmcloud.com/vulnerabilities/79477
http://www.kb.cert.org/vuls/id/408099
http://secunia.com/advisories/51012
http://seclists.org/fulldisclosure/2013/Jan/86
http://packetstormsecurity.com/files/119543/Security-Notice-For-CA-ARCserve-Backup.html