Authorities said Lara Logan was in Tahrir Square after Egyptian President Hosni Mubarak stepped down on Friday. CBS said she and her team "were surrounded by a dangerous element amidst the Celebration," and a mob of more than 200 people were "whipped into a frezy."
Logan was separated from her crew and was brutally attacked and beaten. She was saved by a group of women and an estimated 20 Egyptian soldiers, the network said.
The attack on Logan, CBS News' chief foreign affairs correspondent, is one of at least 140 others suffered by reporters covering the unrest in Egypt since Jan. 30, according to the Committee to Protect Journalists. An Egyptian reporter died from gunshot wounds he received during the protests.
A week before Friday's attack, Logan was detained by the Egyptian military for a day, along with two CBS cameramen. They returned to the U.S. after their release, and Logan went back to Cairo shortly before Mubarak left.
Logan joined CBS News in 2002. She regularly reports for the "CBS Evening News" as well as "60 Minutes," where she has been a correspondent since 2006. She has reported widely from Iraq and Afghanistan, and other global trouble spots.
The Associated Press contributed to this story.