diff --git a/modules/criteoBidAdapter.js b/modules/criteoBidAdapter.js
index cdb07252484..a27f77349bf 100644
--- a/modules/criteoBidAdapter.js
+++ b/modules/criteoBidAdapter.js
@@ -514,6 +514,10 @@ function buildCdbRequest(context, bidRequests, bidderRequest) {
   if (bidderRequest && bidderRequest.uspConsent) {
     request.user.uspIab = bidderRequest.uspConsent;
   }
+  if (bidderRequest && bidderRequest.ortb2?.device?.sua) {
+    request.user.ext = request.user.ext || {};
+    request.user.ext.sua = bidderRequest.ortb2?.device?.sua || {};
+  }
   return request;
 }
 
diff --git a/test/spec/modules/criteoBidAdapter_spec.js b/test/spec/modules/criteoBidAdapter_spec.js
index a05a25ff235..36d04d4b2e0 100755
--- a/test/spec/modules/criteoBidAdapter_spec.js
+++ b/test/spec/modules/criteoBidAdapter_spec.js
@@ -883,6 +883,38 @@ describe('The Criteo bidding adapter', function () {
       expect(request.data.user.uspIab).to.equal('1YNY');
     });
 
+    it('should properly build a request with device sua field', function () {
+      const sua = {}
+      const bidRequests = [
+        {
+          bidder: 'criteo',
+          adUnitCode: 'bid-123',
+          transactionId: 'transaction-123',
+          mediaTypes: {
+            banner: {
+              sizes: [[728, 90]]
+            }
+          },
+          params: {
+            zoneId: 123,
+          },
+        },
+      ];
+      const bidderRequest = {
+        timeout: 3000,
+        uspConsent: '1YNY',
+        ortb2: {
+          device: {
+            sua: sua
+          }
+        }
+      };
+
+      const request = spec.buildRequests(bidRequests, bidderRequest);
+      expect(request.data.user.ext.sua).to.not.be.null;
+      expect(request.data.user.ext.sua).to.equal(sua);
+    });
+
     it('should properly build a request with gpp consent field', function () {
       const bidRequests = [
         {