Unspecified vulnerability in Zimbra Collaboration Server 7.2.5 and earlier, and 8.0.x through 8.0.5, has "critical" impact and unspecified vectors, a different vulnerability than CVE-2013-7091.
https://exchange.xforce.ibmcloud.com/vulnerabilities/89847
http://www.securityfocus.com/bid/64415
http://secunia.com/advisories/56138
http://files.zimbra.com/website/docs/8.0/Zimbra_OS_Release_Notes_8.0.6.pdf
http://files.zimbra.com/website/docs/7.2/Zimbra_OS_Release_Notes_7.2.6.pdf