diff --git a/pkg/services/sqlstore/migrations/accesscontrol/scope_migrator.go b/pkg/services/sqlstore/migrations/accesscontrol/scope_migrator.go
new file mode 100644
index 00000000000..18af9320280
--- /dev/null
+++ b/pkg/services/sqlstore/migrations/accesscontrol/scope_migrator.go
@@ -0,0 +1,33 @@
+package accesscontrol
+
+import (
+	"xorm.io/xorm"
+
+	"github.com/grafana/grafana/pkg/services/accesscontrol"
+	"github.com/grafana/grafana/pkg/services/sqlstore/migrator"
+)
+
+const (
+	AlertingScopeRemovalMigrationID = "removing scope from alert.instances:read action migration"
+)
+
+func AddAlertingScopeRemovalMigration(mg *migrator.Migrator) {
+	mg.AddMigration(AlertingScopeRemovalMigrationID, &alertingScopeRemovalMigrator{})
+}
+
+var _ migrator.CodeMigration = new(alertingScopeRemovalMigrator)
+
+type alertingScopeRemovalMigrator struct {
+	permissionMigrator
+}
+
+func (p *alertingScopeRemovalMigrator) SQL(dialect migrator.Dialect) string {
+	return CodeMigrationSQL
+}
+
+func (p *alertingScopeRemovalMigrator) Exec(sess *xorm.Session, migrator *migrator.Migrator) error {
+	p.sess = sess
+	p.dialect = migrator.Dialect
+	_, err := p.sess.Exec("UPDATE permission SET `scope` = '', `kind` = '', `attribute` = '', `identifier` = '' WHERE action = ?", accesscontrol.ActionAlertingInstanceRead)
+	return err
+}
diff --git a/pkg/services/sqlstore/migrations/accesscontrol/test/scope_migrator_test.go b/pkg/services/sqlstore/migrations/accesscontrol/test/scope_migrator_test.go
new file mode 100644
index 00000000000..9b747b27f32
--- /dev/null
+++ b/pkg/services/sqlstore/migrations/accesscontrol/test/scope_migrator_test.go
@@ -0,0 +1,145 @@
+package test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/grafana/grafana/pkg/infra/log"
+	"github.com/grafana/grafana/pkg/services/accesscontrol"
+	"github.com/grafana/grafana/pkg/services/dashboards"
+	"github.com/grafana/grafana/pkg/services/datasources"
+	acmig "github.com/grafana/grafana/pkg/services/sqlstore/migrations/accesscontrol"
+	"github.com/grafana/grafana/pkg/services/sqlstore/migrator"
+	"github.com/grafana/grafana/pkg/setting"
+)
+
+func TestScopeMigration(t *testing.T) {
+	// Run initial migration to have a working DB
+	x := setupTestDB(t)
+
+	type migrationTestCase struct {
+		desc            string
+		permissionSeed  []*accesscontrol.Permission
+		wantPermissions []*accesscontrol.Permission
+	}
+	testCases := []migrationTestCase{
+		{
+			desc:            "empty perms",
+			permissionSeed:  []*accesscontrol.Permission{},
+			wantPermissions: []*accesscontrol.Permission{},
+		},
+		{
+			desc: "no permissions with alerting instance read action",
+			permissionSeed: []*accesscontrol.Permission{
+				{
+					RoleID:    1,
+					Action:    accesscontrol.ActionAlertingInstancesExternalRead,
+					Scope:     datasources.ScopeAll,
+					Kind:      "datasources",
+					Attribute: "*",
+					Created:   now,
+					Updated:   now,
+				},
+			},
+			wantPermissions: []*accesscontrol.Permission{
+				{
+					RoleID:    1,
+					Action:    accesscontrol.ActionAlertingInstancesExternalRead,
+					Scope:     datasources.ScopeAll,
+					Kind:      "datasources",
+					Attribute: "*",
+				},
+			},
+		},
+		{
+			desc: "has permission with alerting instance read action and folder scope",
+			permissionSeed: []*accesscontrol.Permission{
+				{
+					RoleID:     1,
+					Action:     accesscontrol.ActionAlertingInstanceRead,
+					Scope:      dashboards.ScopeFoldersAll,
+					Kind:       "folders",
+					Attribute:  "uid",
+					Identifier: "*",
+					Created:    now,
+					Updated:    now,
+				},
+			},
+			wantPermissions: []*accesscontrol.Permission{
+				{
+					RoleID: 1,
+					Action: accesscontrol.ActionAlertingInstanceRead,
+				},
+			},
+		},
+		{
+			desc: "has permission with alerting instance read action and no scope",
+			permissionSeed: []*accesscontrol.Permission{
+				{
+					RoleID:  1,
+					Action:  accesscontrol.ActionAlertingInstanceRead,
+					Created: now,
+					Updated: now,
+				},
+			},
+			wantPermissions: []*accesscontrol.Permission{
+				{
+					RoleID: 1,
+					Action: accesscontrol.ActionAlertingInstanceRead,
+				},
+			},
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.desc, func(t *testing.T) {
+			// Remove migration and permissions
+			_, errDeleteMig := x.Exec(`DELETE FROM migration_log WHERE migration_id = ?`, acmig.AlertingScopeRemovalMigrationID)
+			require.NoError(t, errDeleteMig)
+			_, errDeletePerms := x.Exec(`DELETE FROM permission`)
+			require.NoError(t, errDeletePerms)
+
+			// seed DB with permissions
+			if len(tc.permissionSeed) != 0 {
+				permissionsCount, err := x.Insert(tc.permissionSeed)
+				require.NoError(t, err)
+				require.Equal(t, int64(len(tc.permissionSeed)), permissionsCount)
+			}
+
+			// Run RBAC action name migration
+			acmigrator := migrator.NewMigrator(x, &setting.Cfg{Logger: log.New("acmigration.test")})
+			acmig.AddAlertingScopeRemovalMigration(acmigrator)
+
+			errRunningMig := acmigrator.Start(false, 0)
+			require.NoError(t, errRunningMig)
+
+			// Check permissions
+			resultingPermissions := []accesscontrol.Permission{}
+			err := x.Table("permission").Find(&resultingPermissions)
+			require.NoError(t, err)
+
+			// verify got == want
+			assert.Equal(t, len(tc.wantPermissions), len(resultingPermissions))
+			for _, wantPermission := range tc.wantPermissions {
+				foundMatch := false
+				for _, resultingPermission := range resultingPermissions {
+					if wantPermission.Action == resultingPermission.Action &&
+						wantPermission.Scope == resultingPermission.Scope &&
+						wantPermission.Kind == resultingPermission.Kind &&
+						wantPermission.Attribute == resultingPermission.Attribute &&
+						wantPermission.Identifier == resultingPermission.Identifier &&
+						wantPermission.RoleID == resultingPermission.RoleID {
+						assert.NotEmpty(t, resultingPermission.Updated)
+						assert.NotEmpty(t, resultingPermission.Created)
+						foundMatch = true
+						continue
+					}
+				}
+				assert.True(t, foundMatch, fmt.Sprintf("there should be a permission with action %s in the DB after the migration", wantPermission.Action))
+			}
+		})
+	}
+}
diff --git a/pkg/services/sqlstore/migrations/migrations.go b/pkg/services/sqlstore/migrations/migrations.go
index fd2ecacfc06..95eef328cef 100644
--- a/pkg/services/sqlstore/migrations/migrations.go
+++ b/pkg/services/sqlstore/migrations/migrations.go
@@ -119,6 +119,8 @@ func (oss *OSSMigrations) AddMigration(mg *Migrator) {
 	addKVStoreMySQLValueTypeLongTextMigration(mg)
 
 	ualert.AddRuleNotificationSettingsColumns(mg)
+
+	accesscontrol.AddAlertingScopeRemovalMigration(mg)
 }
 
 func addStarMigrations(mg *Migrator) {