http://www.cohenufo.org/unsolved.html#aldrinapollo119/26/05: ... Verified as fact by "Buzz" Aldrin, an unsolved UFO seen by astronauts Neil Armstrong and "Buzz" Aldrin on their Apollo 11 flight to the moon [continued]
See in particular the videos on page two. It is claimed that this case is not resolved.
I was aware of the story but never saw the video or the specific claims made by Aldrin, which can be seen on the show cited: "First on the Moon: The untold story". It aired today on the Science channel.
Perhaps this has been explained since the show first aired last year?
Edit: I just noticed in the video linked that they say "an object filmed...like this one filmed on a later mission". That complicates things a bit.