N.Y. Comp. Codes R. & Regs. tit. 20, § 652.3
(a) In the case of a mortgage of real property upon which the taxes described in Part 642 of this Title have not been paid the Attorney General of the State of New York may enforce the payment of such taxes by following the procedures described in subdivision (b) or (c) of this section.
(1) The Attorney General of the State of New York may maintain an action in the appropriate court to have the mortgage upon which such taxes are due sold.
(2) All money recovered as a result of the sale of a mortgage shall be paid by the Attorney General to the proper recording officer in satisfaction of the taxes owed and all costs recovered as a result of the sale shall be paid into the state treasury.
(c)
(1) In lieu of or in addition to the sale of the mortgage as described in subdivision (b) of this section, in the case of a mortgage of real property upon which the taxes described in Part 642 of this Title have not been paid, the Attorney General may maintain an action in the appropriate court against the mortgagee or his assignee or successor in interest personally to recover such taxes.
(2)
(b)
Tax Law, §§ 266, 267