CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the references to our firm under the captions "Financial Highlights" in the Prospectus and "Counsel and Independent Registered Public Accounting Firm" in the Statement of Additional Information, each dated August 31, 2026, and each included in this Post-Effective Amendment No. 70 to the Registration Statement (Form N-1A, File No. 033-07496) of BNY Mellon Opportunistic Municipal Securities Fund (the “Registration Statement”).

We also consent to the incorporation by reference of our report dated June 23, 2026, with respect to the financial statements and financial highlights of BNY Mellon Opportunistic Municipal Securities Fund, included in the Annual Report (Form N-CSR) for the year ended April 30, 2026, into this Registration Statement, filed with the Securities and Exchange Commission.

/s/ ERNST & YOUNG LLP

New York, New York

August 26, 2026