Politico seems to think so. I fine this line interesting:
CBS News executives see Attkisson wading dangerously close to advocacy on the issue, network sources have told POLITICO
Advocacy? Advocate for whom? The truth? The American Public? The dead in Benghazi? This is exactly what I was discussing on the air today. The Obama administration has been successful in keeping extended coverage of Benghazi out of the traditional alphabet networks. Attkisson can't be dismissed as a Republican house organ, as the administration tries to do with Fox News.
I also find interesting the line about some of her stories not making air. Why? Did the network find them to be inaccurate, poorly sourced, or just inconvenient?