Microsoft has released a cumulative update for Lync Server 2013
This download includes all available updates for Lync Server 2013:Lync Server 2013 Cumulative Update KB 2809243
Update for Core Components
2781550 Description of the cumulative update for Lync Server 2013, Core Components: February 2013
Update for Conferencing server
2781551 Description of the cumulative update for Lync Server 2013, Conferencing Server: February 2013
Update for Web Components server
2781564 Description of the cumulative update for Lync Server 2013, Web Components: February 2013
Update for Standard or Enterprise edition server
2781547 Description of the cumulative update for Lync Server 2013: February 2013
Update for Web Conferencing server
2787570 Description of the cumulative update for Lync Server 2013, Web Conferencing Server: February 2013
Update for Mediation server
2796554 Description of the cumulative update for Lync Server 2013, Mediation Server: February 2013
Update for Unified Communications Managed API 4.0, Core Runtime 64-bit
2781555 Description of the cumulative update for Lync Server 2013, Unified Communications Managed API 4.0 Runtime: February 2013
Update for Call Park Service
2781549 Description of the cumulative update for the Lync Server 2013 Call Park service: February 2013