An elderly woman was critically injured in a fire at an Upper East Side high rise Friday night.

According to FDNY Battalion Chief Mark Rosenbaum, the blaze began in the woman’s seventh-floor apartment at 28 E. 73rd St. shortly after 7 p.m.

Amid heavy smoke, firefighters broke down the door to the apartment to find her on the floor in a state of cardiac arrest.

She was revived at the scene by EMTs and being rushed to Weill Cornell Medical Center, Rosenbaum said.

Three firefighters were hospitalized with non-life-threatening injuries.

The FDNY said the cause of the blaze is under investigation.