EXHIBIT 99.3 ASSIGNMENT AGREEMENT ASSIGNMENT AGREEMENT, dated as of November 30, 2006 ("Assignment Agreement"), among BEAR STEARNS CAPITAL MARKETS ("BSCM"), BEAR STEARNS FINANCIAL PRODUCTS ("BSFP" or "Remaining Party"), COUNTRYWIDE HOME LOANS, INC....Assignment Agreement • December 15th, 2006 • CWABS Asset-Backed Certificates Trust 2006-21 • Asset-backed securities • New York
CWABS, INC., Depositor COUNTRYWIDE HOME LOANS, INC., Seller PARK MONACO INC., Seller PARK SIENNA LLC, SellerPooling and Servicing Agreement • December 29th, 2006 • CWABS Asset-Backed Certificates Trust 2006-21 • Asset-backed securities • New York
EXHIBIT 99.4 SWAP CONTRACT ADMINISTRATION AGREEMENT This SWAP CONTRACT ADMINISTRATION AGREEMENT, dated as of November 30, 2006 (this "Agreement"), among THE BANK OF NEW YORK ("BNY"), as Swap Contract Administrator (in such capacity, the "Swap Contract...Swap Contract Administration Agreement • December 15th, 2006 • CWABS Asset-Backed Certificates Trust 2006-21 • Asset-backed securities • New York
