Yes, fake loan apps can affect your CIBIL score (or credit score) if they are somehow linked to your legitimate financial activities. If these apps engage in fraudulent activities such as opening accounts in your name, not reporting your loan repayments, or performing unauthorized credit checks, it can negatively impact your credit score. However, if they are completely fictitious and not tied to real financial institutions, they might not have a direct impact on your CIBIL score but could pose other risks like identity theft.