Cisco Unified Presence collects information about user availability for use with the Cisco Unified Communications system. The application is exposed to a denial of service issue that occurs when handling a flood of TCP requests.
Ref:
http://www.cisco.com/en/US/products/products_security_advisory09186a0080afc930.shtml
09.44.105 - CVE: CVE-2009-2052
Platform: Network Device