I just happen to be on a security forum just then and spotted this:
The Xbox One, S, and Xbox One X are unaffected by the Spectre and Meltdown chip issues
Discussion here: Q&A - Spectre & Meltdown: Is the Xbox One, PS4 and Swtich affected?
As someone in the topic has reported "PlayStation 4 uses an AMD processor and AMD is allegedly not vulnerable to Meltdown" With that said, a version of Spectre may be valid on it.
Not looking good guys
The Xbox One, S, and Xbox One X are unaffected by the Spectre and Meltdown chip issues
Discussion here: Q&A - Spectre & Meltdown: Is the Xbox One, PS4 and Swtich affected?
As someone in the topic has reported "PlayStation 4 uses an AMD processor and AMD is allegedly not vulnerable to Meltdown" With that said, a version of Spectre may be valid on it.
Not looking good guys