diff --git a/changes/19153-duplicate b/changes/19153-duplicate
new file mode 100644
index 0000000000..584cb9fc3f
--- /dev/null
+++ b/changes/19153-duplicate
@@ -0,0 +1 @@
+- Fixes a bug that caused the `GET /software/titles` endpoint to ignore the team filter for uploaded software.
\ No newline at end of file
diff --git a/server/datastore/mysql/software_titles.go b/server/datastore/mysql/software_titles.go
index bd98f58b03..a74cf98c18 100644
--- a/server/datastore/mysql/software_titles.go
+++ b/server/datastore/mysql/software_titles.go
@@ -204,7 +204,7 @@ SELECT
 	MAX(COALESCE(sthc.updated_at, date('0001-01-01 00:00:00'))) as counts_updated_at,
 	si.filename as software_package
 FROM software_titles st
-LEFT JOIN software_installers si ON si.title_id = st.id
+LEFT JOIN software_installers si ON si.title_id = st.id AND COALESCE(si.team_id, 0) = ?
 LEFT JOIN software_titles_host_counts sthc ON sthc.software_title_id = st.id AND sthc.team_id = ?
 -- placeholder for JOIN on software/software_cve
 %s
@@ -220,9 +220,10 @@ GROUP BY st.id, software_package`
 	}
 
 	var globalOrTeamID uint
-	args := []any{0}
+	args := []any{0, 0}
 	if opt.TeamID != nil {
 		args[0] = *opt.TeamID
+		args[1] = *opt.TeamID
 		globalOrTeamID = *opt.TeamID
 	}
 
diff --git a/server/service/integration_enterprise_test.go b/server/service/integration_enterprise_test.go
index d363b40dd6..dbfd80e669 100644
--- a/server/service/integration_enterprise_test.go
+++ b/server/service/integration_enterprise_test.go
@@ -7629,6 +7629,7 @@ func (s *integrationEnterpriseTestSuite) TestAllSoftwareTitles() {
 	payload := &fleet.UploadSoftwareInstallerPayload{
 		InstallScript: "install",
 		Filename:      "ruby.deb",
+		TeamID:        &team1.ID,
 	}
 	s.uploadSoftwareInstaller(payload, http.StatusOK, "")
 
@@ -7638,6 +7639,30 @@ func (s *integrationEnterpriseTestSuite) TestAllSoftwareTitles() {
 		listSoftwareTitlesRequest{},
 		http.StatusOK, &resp,
 		"query", "ruby",
+		"team_id", fmt.Sprintf("%d", team1.ID),
+	)
+
+	require.Len(t, resp.SoftwareTitles, 1)
+	require.NotNil(t, resp.SoftwareTitles[0].SoftwarePackage)
+	require.Equal(t, "ruby.deb", *resp.SoftwareTitles[0].SoftwarePackage)
+
+	// Upload an installer for the same software but different arch to a different team
+	payload = &fleet.UploadSoftwareInstallerPayload{
+		InstallScript: "install",
+		Filename:      "ruby_arm64.deb",
+		TeamID:        &team2.ID,
+	}
+	s.uploadSoftwareInstaller(payload, http.StatusOK, "")
+
+	// We should only see the one we uploaded to team 1
+
+	resp = listSoftwareTitlesResponse{}
+	s.DoJSON(
+		"GET", "/api/latest/fleet/software/titles",
+		listSoftwareTitlesRequest{},
+		http.StatusOK, &resp,
+		"query", "ruby",
+		"team_id", fmt.Sprintf("%d", team1.ID),
 	)
 
 	require.Len(t, resp.SoftwareTitles, 1)
diff --git a/server/service/testdata/software-installers/ruby_arm64.deb b/server/service/testdata/software-installers/ruby_arm64.deb
new file mode 100644
index 0000000000..b8ac63e044
Binary files /dev/null and b/server/service/testdata/software-installers/ruby_arm64.deb differ