Fannie Mae, the mortgage finance giant, learned as early as 2003 of extensive foreclosure abuses among the law firms it had hired to remove troubled borrowers from their homes. But the company did little to correct the firms’ practices, according to a report issued Tuesday.

Only after news reports in mid-2010 began to describe the dubious practices, like the routine filing of false pleadings in bankruptcy courts, did Fannie Mae’s overseer start to scrutinize the conduct. The report was critical of that overseer, the Federal Housing Finance Agency, and was prepared by the agency’s inspector general.

In one notable lapse, even after the agency reported problems to Fannie Mae in late 2010 about some of the approved law firms, it did not request a response from the company, the report said.

“American homeowners have been struggling with the effects of the housing finance crisis for several years, and they shouldn’t have to worry whether they will be victims of foreclosure abuse,” said Steve Linick, inspector general of the finance agency. “Increased oversight by F.H.F.A. could help to prevent these abuses.”