SharePoint 2013 Versions / editions, patches and links for download

Here you go, all versions numbers of SharePoint 2013, so you can identify which one you have and upgrade if needed:

It's recommended to install only Service Packs and public updates.

The Cumulative Updates should only be installed if you verify the specific bug or error,

SharePoint Server 2013

Build Number	Build Name	Release Date	Component	Description
15.0.4727.1001	June 2015 CU	2015, June 9	SP Foundation 2013	KB3054864
			SP Server 2013	KB3054866
			Project Server 2013	KB3054865
15.0.4719.1002	May 2015 CU	2015, May 12	SP Foundation 2013	KB3039747
			SP Server 2013	KB3039780
			Project Server 2013	KB3039753
15.0.4711.1000	April 2015 CU	2015, April 14	SP Foundation 2013	KB2965261
			SP Server 2013	KB2965266
			Project Server 2013	KB2965263
15.0.4701.1001	March 2015 CU	2015, March 10	SP Foundation 2013	KB2956159
			SP Server 2013	KB2956166
			Project Server 2013	KB2956162
15.0.4693.1001	February 2015 CU	2015, February 10	SP Foundation 2013	KB2920801
			SP Server 2013	KB2920804
			Project Server 2013	KB2920796
15.0.4675.1000	December 2014 CU	2014, December 9	SP Foundation 2013	KB2910945
			SP Server 2013	KB2910938
			Project Server 2013	KB2910911
15.0.4667.1000	November 2014 CU	2014, November 12	SP Foundation 2013	KB2899468
			SP Server 2013	KB2889944
			Project Server 2013	KB2889949
15.0.4659.1001	October 2014 Hotfix	2014, October 14	SP Foundation 2013	KB2889946
			SP Server 2013	KB2899469
				KB2880962
				KB2880485
			Project Server 2013	KB2889959
15.0.4649.1001	September 2014 CU	2014, September 9	SP Foundation 2013	KB2883087
			SP Server 2013	KB2883068
			Project Server 2013	KB2883072
15.0.4641.1001	August 2014 Hotfix	2014, August 12	SP Foundation 2013	KB2883081
			SP Server 2013	KB2760213
				KB2880559
				KB2883078
				KB2883085
				KB2883086
			Project Server 2013	KB2883083
15.0.4631.1001	July 2014 CU	2014, July 8	SP Foundation 2013	KB2882999
			SP Server 2013	KB2882989
			Project Server 2013	KB2882990
15.0.4617.1001	June 2014 CU	2014, June 10	SP Foundation 2013	KB2881063
			SP Server 2013	KB2881061
			Project Server 2013	KB2881062
15.0.4615.1001	MS14-022	2014, May 13	SP Foundation 2013	KB2952166
			SP Server 2013	KB2952166
			Project Server 2013	KB2952166
15.0.4605.1004	April 2014 CU	2014, May 7	SP Foundation 2013	KB2863892
			SP Server 2013	KB2878240
			Project Server 2013	KB2880484
15.0.4571.1502	Service Pack 1	2014, April 22	SP Foundation 2013	KB2880551
	(re-released)		SP Server 2013	KB2880552
			Project Server 2013	KB2880553
15.0.4569.1000	Service Pack 1	2014, February 25	SP Foundation 2013	KB2817439
15.0.4569.1506	(replaced)		SP Server 2013	KB2817429
			Project Server 2013	KB2817434
15.0.4551.1508	December 2013 CU	2013, December 10	SP Foundation 2013	KB2849961
15.0.4551.1511			SP Server 2013	KB2850024
15.0.4551.1508			Project Server 2013	KB2837668
15.0.4551.1001	October 2013 CU	2013, October 8	SP Foundation 2013	KB2825674
15.0.4551.1005		2013, October 26	SP Server 2013	KB2825647
15.0.4551.1001		2013, October 8	Project Server 2013	KB2825659
15.0.4535.1000	August 2013 CU	2013, August 13	SP Foundation 2013	KB2817517
			SP Server 2013	KB2817616
			Project Server 2013	KB2817615
15.0.4517.1003	June 2013 CU	2013, June 26	SP Foundation 2013	KB2817346
15.0.4517.1005			SP Server 2013	KB2817414
			Project Server 2013	KB2817415
15.0.4505.1002	April 2013 CU	2013, April 9	SP Foundation 2013	KB2751999
15.0.4505.1005		2013, April 26	SP Server 2013	KB2726992
			Project Server 2013	KB2737990
15.0.4481.1005	March 2013 Public Update	2013, March 12	SP Foundation 2013	KB2768000
			SP Server 2013	KB2767999
			Project Server 2013	KB2768001
15.0.4433.1506	N/A	N/A	SP Foundation 2013	N/A
	December 2012 Hotfix	2013, December 11	SP Server 2013	KB2752058
			SP Server 2013(coreserver)	KB2752001
	N/A	N/A	Project Server 2013	N/A
15.0.4420.1017	RTM	2012, October 24	SP Foundation 2013	Download
			SP Server 2013	180-day trial
			Project Server 2013	180-day trial
15.0.4481.1005	Beta	2012, July 18	SP Foundation 2013
			SP Server 2013
			Project Server 2013