The US President accused the network of a “vicious and purposeful mistake” in its reporting.
Mr Trump has previously attacked the “FAKE NEWS media”, in which he included The New York Times, CNN, NBC and others, as “the enemy of the American People”.
He has used the “fake news” slogan to rally his supporters and deflect criticism repeatedly on the campaign trail as well as during his presidency.
He said on Saturday: “CNN’S slogan is CNN, THE MOST TRUSTED NAME IN NEWS. Everyone knows this is not true, that this could, in fact, be a fraud on the American Public. There are many outlets that are far more trusted than Fake News CNN. Their slogan should be CNN, THE LEAST TRUSTED NAME IN NEWS!”
CNN reported a story yesterday that Mr Trump and his son were sent a “decryption key” which would have allowed them to access hacked documents from Wikileaks before they were available to the public.
There was no evidence any of the recipients – which included now-White House Communications Director Hope Hicks and Trump Organisation officials – accessed the information.
However, the CNN report was incorrect. The email was not sent on 4 September but ten days later, as confirmed by the Washington Post.
That meant the email containing the Wikileaks key was sent one day after those hacked documents were made public, meaning the Trumps were not given early access.
CNN corrected the report and admitted it “less significant than CNN initially reported”.
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But, Mr Trump accused them of intentionally misleading readers, tweeting: “Fake News CNN made a vicious and purposeful mistake yesterday. They were caught red handed, just like lonely Brian Ross at ABC News (who should be immediately fired for his “mistake”). Watch to see if @CNN fires those responsible, or was it just gross incompetence?”
Mr Trump himself has made more than 1,600 false statements so far as President, according to The Washington Post‘s tally.
His latest attack on journalists came just minutes after he talked up the success of a rally held in Pensacola, Florida, where he urged supporters to get behind controversial Senate candidate Roy Moore.
“A big contingent of very enthusiastic Roy Moore fans at the rally last night. We can’t have a Pelosi/Schumer Liberal Democrat, Jones, in that important Alabama Senate seat. Need your vote to Make America Great Again! Jones will always vote against what we must do for our Country,” he said on Twitter.
“Arena was packed to the rafters, the crowd was loud, loving and really smart. They definitely get what’s going on,” he added.
Mr Moore, 70, faces multiple allegations of sexual misconduct, including accusations that he molested two teenage girls and pursued romantic relationships with several others while in his 30s. He has denied all the allegations.
The White House said the rally was a campaign event for Mr Trump. But the location — close to the Alabama-Florida border and broadcasting in both states’ television markets — stoked speculation that it was a backdoor way for the president to boost Mr Moore’s campaign without actually setting foot in the state.
Additional reporting by agencies