Fitch Affirms 65 RMBS Classes from 21 Wells Fargo Mortgage Backed Securities

Business Wire, Nov 13, 2007

NEW YORK -- Fitch Ratings affirmed the following Wells Fargo Mortgage Backed Securities pass-through certificates:

Wells Fargo 2002-10

--Class A affirmed at 'AAA';

--Class B-1 affirmed at 'AAA';

--Class B-2 affirmed at 'AAA';

--Class B-3 affirmed at 'AA ';

--Class B-4 affirmed at 'AA';

--Class B-5 affirmed at 'A'.

Wells Fargo 2002-14

--Class A affirmed at 'AAA';

--Class B-1 affirmed at 'AAA';

--Class B-2 affirmed at 'AAA';

--Class B-3 affirmed at 'AAA';

--Class B-4 affirmed at 'AA ';

--Class B-5 affirmed at 'A'.

Wells Fargo 2002-18

--Class A affirmed at 'AAA'.

Wells Fargo 2002-20

--Class A affirmed at 'AAA'.

Wells Fargo 2003-3 Group 1

--Class A affirmed at 'AAA'.

Wells Fargo 2003-3 Group 2

--Class A affirmed at 'AAA'.

Wells Fargo 2003-4

--Class A affirmed at 'AAA';

--Class B-1 affirmed at 'AA ';

--Class B-2 affirmed at 'AA';

--Class B-3 affirmed at 'A';

--Class B-4 affirmed at 'BBB';

--Class B-5 affirmed at 'BB'.

Wells Fargo 2003-5

--Class A affirmed at 'AAA';

--Class B-1 affirmed at 'AAA';

--Class B-2 affirmed at 'AA ';

--Class B-3 affirmed at 'AA-';

--Class B-4 affirmed at 'BBB ';

--Class B-5 affirmed at 'BB'.

Wells Fargo 2003-9 Group 1

--Class A affirmed at 'AAA';

--Class B-1 affirmed at 'AA';

--Class B-2 affirmed at 'A ';

--Class B-3 affirmed at 'BBB ';

--Class B-4 affirmed at 'BB';

--Class B-5 affirmed at 'B'.

Wells Fargo 2003-9 Group 2

--Class A affirmed at 'AAA';

--Class B-1 affirmed at 'AA ';

--Class B-2 affirmed at 'AA-';

--Class B-3 affirmed at 'A-';

--Class B-4 affirmed at 'BBB-';

--Class B-5 affirmed at 'BB-'.

Wells Fargo 2003-10

--Class A affirmed at 'AAA'.

Wells Fargo 2003-12

--Class A affirmed at 'AAA'.

Wells Fargo 2003-13

--Class A affirmed at 'AAA'.

Wells Fargo 2003-14

--Class A affirmed at 'AAA'.

Wells Fargo 2003-16

--Class A affirmed at 'AAA';

--Class B-2 affirmed at 'A';

--Class B-5 affirmed at 'B'.

Wells Fargo 2003-17

--Class A affirmed at 'AAA'.

Wells Fargo 2003-18

--Class A affirmed at 'AAA'.

Wells Fargo 2003-19

--Class A affirmed at 'AAA'.

Wells Fargo 2003-B

--Class A affirmed at 'AAA';

--Class B-1 affirmed at 'AAA';

--Class B-2 affirmed at 'AA';

--Class B-3 affirmed at 'A';

--Class B-4 affirmed at 'BB ';

--Class B-5 affirmed at 'B '.

Wells Fargo 2003-I

--Class A affirmed at 'AAA';

--Class B-1 affirmed at 'AA ';

--Class B-2 affirmed at 'A ';

--Class B-3 affirmed at 'BBB ';

--Class B-4 affirmed at 'BB ';

--Class B-5 affirmed at 'B '.

Wells Fargo 2003-K

--Class A affirmed at 'AAA'.

Wells Fargo 2003-M

--Class A affirmed at 'AAA'.

Wells Fargo 2003-O

--Class A affirmed at 'AAA'.

The affirmations reflect a satisfactory relationship between credit enhancement (CE) and future loss expectations and affect approximately $5.81 billion of outstanding certificates.

As of the October distribution date, the transactions listed above are seasoned from 46 (2003-19 and 2003-O) to 65 (2002-10) months. The pool factors (current principal balance as a percentage of original) range approximately from 9% (2002-18) to 67% (2003-17).

The underlying collateral for Wells Fargo Asset Securities Corp. transactions consists of prime fixed and adjustable-rate mortgage loans secured primarily by one- to four- family residential properties. All of the mortgage loans were generally originated in conformity with underwriting standards of Wells Fargo Home Mortgage, Inc. (WFHM). WFHM sold the loans to Wells Fargo Asset Securities Corporation (WFASC), a special purpose corporation, who deposited the loans into the trust.

Wells Fargo Bank, N.A., rated 'RMS1' by Fitch, is the master servicer for all of the above transactions.

Further information regarding current delinquency, loss and credit enhancement statistics is available on the Fitch Ratings web site at www.fitchratings.com.

Fitch's rating definitions and the terms of use of such ratings are available on the agency's public site, www.fitchratings.com. Published ratings, criteria and methodologies are available from this site, at all times. Fitch's code of conduct, confidentiality, conflicts of interest, affiliate firewall, compliance and other relevant policies and procedures are also available from the 'Code of Conduct' section of this site.