Conn. Gen. Stat. § 12-386: Legacy charged on real property.

If a legacy subject to the tax imposed by this chapter is charged upon or payable out of real property, the heirs or devisees to whom the real property is transferred, before paying such legacy, shall deduct the tax thereon and pay it to the representatives of the estate and, upon failure of the heirs or devisees to deduct and pay such tax, it may be enforced against the real property out of which the legacy was payable in the manner prescribed by section 12-385 and shall be a lien upon such real property.