Exhibit 15 

Basel, 17 March 2025

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in each of the following registration statements of UBS AG:

(1)

 on Form F-3 (Registration Number 333-283672), and each related prospectus currently outstanding

under such registration statement,

(2)

 the base prospectus of Corporate Asset Backed Corporation (CABCO) dated 23 June 2004

(Registration Number 333-111572),

(3)

 the Form 8-K of CABCO dated 23 June 2004 (SEC File Number 001-13444), and

(4)

 the Prospectus Supplements relating to the CABCO Series 2004-101 Trust dated 10 May 2004

(Registration Number 033-91744) and 17 May 2004 (Registration Number 033-91744-05), 

of our report dated 14 March 2025, with respect to the consolidated financial statements of UBS AG, included

in this Annual Report (Form 20-F) for the year ended 31 December 2024, filed with the Securities and

Exchange Commission.

/s/ Ernst & Young Ltd