The country singer retweeted a request from a follower today, asking him to share a photograph of his grandfather who is a fan of the musician.
Unfortunately for Cyrus, the appeal was a joke and the pictured man was late prolific paedophile Jimmy Savile.
Even worse, the singer is seemingly oblivious to his error as the tweet is still live on his feed. Numerous social media users have pointed out the mistake, but he has yet to take action.
At the time of writing, Savile abused at least 500 victims, with the youngest allegedly just two years old, the NSPCC has reported. The most common age group for his victims was 13 to 15.
He also targeted hospital patients, ranging from five-year-old children to 75-year-old pensioners, including men, women, boys and girls. Abuse claims were made at 28 NHS hospitals, including Broadmoor psychiatric hospital, an investigation has found.
Investigators were given "macabre accounts" of Savile "acting unacceptably" with dead bodies in the mortuary at Leeds General Infirmary.
Donald Trump was on the receiving end of a similar joke earlier this week, when he retweeted a picture of infamous serial murderers Fred and Rose West after a Twitter user tricked him into thinking that the image was of his late parents.
The US business magnate did not react well and has consequently threatened to sue.Reuse content