CBS board members are debating whether network chief executive Les Moonves should step down amid an investigation into allegations he sexually harassed women dating back to the 1980s, a report said Sunday.

The discussions come as the board prepares to announce probes into both Moonves — whose alleged misdeeds were detailed in a New Yorker article published Friday — as well as the network’s broader workplace culture, The Wall Street Journal reported.

“I think the board realizes as a whole that this is a very, very, very serious situation,” the paper quoted one source as saying. “While there is an important Les piece to this, really, more important to the company as a whole is that this raises serious issues with regard to culture and harassment throughout the company.”

Six women came forward to levy sexual misconduct charges against Moonves, 68, for the bombshell New Yorker report by Ronan Farrow, with four claiming that their show business careers suffered after rebuffing his advances.

Moonves — who is married to Julie Chen, host of the network’s “Big Brother” and “The Talk” — offered a lukewarm acknowledgment of the impropriety, but downplayed the incidents and denied exploiting his position to lash out at the women.

“I recognize that there were times decades ago when I may have made some women uncomfortable by making advances,” Moonves said in a statement. “But I always understood and respected — and abided by the principle — that ‘no’ means ‘no,’ and I have never misused my position to harm or hinder anyone’s career.”

The CBS board is expected to appoint a special committee to manage the investigation, in conjunction with an outside law firm hired by the network on Friday, The Wall Street Journal reported.