Well, let's say that you are running a 32 point buy, per the table in the DMG.
STR 14 costs 6 points
DEX 14 costs 6 points
CON 14 costs 6 points
INT 12 costs 4 points
WIS 14 costs 6 points
CHA 10 costs 2 points.
There's a 14 in every important stat, the minimum needed in INT to get more than one level 1 spell per day, and enough Charisma that people don't hate you on sight.
If you never plan to take WIZ past 1st level, it's workable. Hardly remarkable or powerful, but workable. Taking anything higher than a 14 costs 2 per point for 15 and 16, so probably not worth it.
Now you can add a racial package to bump something to a 16 while dropping something else to a 12.
You could afford to lower CON that way I suppose. Nobody does well with low hit points, but it isn't really a requirement for any of the classes.
Or you could stay Human, drop the CON to 10 anyway and have a single 16 someplace else.
I can see how this would work. Like I said, not great, but workable.