TIBCO SmartSockets RTserver 6.8.0 and earlier, RTworks before 4.0.4, and Enterprise Message Service (EMS) 4.0.0 through 4.4.1 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted requests that control loop operations related to memory.

More... (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2007-5656)