Home Equity Mortgage Trust 2006-5 Sample Contracts

Credit Suisse First Boston Mortgage Securities Corp. UNDERWRITING AGREEMENT $784,000,100 (Approximate) Home Equity Mortgage Trust 2006-5 Home Equity Mortgage Pass-Through Certificates, Series 2006-5

Underwriting Agreement • November 15th, 2006 • Home Equity Mortgage Trust 2006-5 • Asset-backed securities • New York

• Contract Type
  Underwriting Agreement
• Filed
  November 15th, 2006
• Company
  Home Equity Mortgage Trust 2006-5
• Industry
  Asset-backed securities
• Jurisdiction
  New York

Credit Suisse First Boston Mortgage Securities Corp., a corporation organized and existing under the laws of the State of Delaware (the “Depositor”), proposes to sell to Credit Suisse Securities (USA) LLC (“Credit Suisse”) (the “Underwriter”) fifteen classes of the Depositor’s Home Equity Mortgage Pass-Through Certificates, Series 2006-5. Such classes have been designated as the Class A-1, Class A-2, Class A-3, Class A-IO, Class A-R, Class M-1, Class M-2, Class M-3, Class M-4, Class M-5, Class M-6, Class M-7, Class M-8, Class M-9 and Class B-1 Certificates (collectively, the “Certificates”). The Certificates, together with the Depositor’s Home Equity Mortgage Pass-Through Certificates, Series 2006-5, Class P, Class X-1, Class X-2 and Class X-S Certificates, will represent the entire beneficial ownership interest in a trust fund (the “Trust Fund”) consisting of a pool of conventional, primarily fixed rate, one-to-four family, primarily second lien residential mortgage loans (the “Initia

CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP., Depositor DLJ MORTGAGE CAPITAL, INC., Seller SELECT PORTFOLIO SERVICING, INC., Servicer and Master Servicer OCWEN LOAN SERVICING, LLC, Servicer and Trustee

Pooling and Servicing Agreement • November 15th, 2006 • Home Equity Mortgage Trust 2006-5 • Asset-backed securities • New York

• Contract Type
  Pooling and Servicing Agreement
• Filed
  November 15th, 2006
• Company
  Home Equity Mortgage Trust 2006-5
• Industry
  Asset-backed securities
• Jurisdiction
  New York

THIS POOLING AND SERVICING AGREEMENT, dated as of October 1, 2006, among CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP., a Delaware corporation, as depositor (the “Depositor”), DLJ MORTGAGE CAPITAL, INC., a Delaware corporation, as Seller (the “Seller”), SELECT PORTFOLIO SERVICING, INC., a Utah corporation, as a servicer (a “Servicer” or “SPS”) and as master servicer (the “Master Servicer”) and OCWEN LOAN SERVICING, LLC, a Delaware limited liability company, as a servicer (a “Servicer” or “Ocwen”, and together with SPS, the “Servicers”) and U.S. BANK NATIONAL ASSOCIATION, a national banking association organized under the laws of the United States, as trustee (the “Trustee”).