diff --git a/source3/rpc_server/samr/srv_samr_nt.c b/source3/rpc_server/samr/srv_samr_nt.c
index 7eb06cfe90d..2f6f0203248 100644
--- a/source3/rpc_server/samr/srv_samr_nt.c
+++ b/source3/rpc_server/samr/srv_samr_nt.c
@@ -6746,6 +6746,11 @@ NTSTATUS _samr_ValidatePassword(struct pipes_struct *p,
 		return NT_STATUS_ACCESS_DENIED;
 	}
 
+	if (p->auth.auth_level != DCERPC_AUTH_LEVEL_PRIVACY) {
+		p->fault_state = DCERPC_FAULT_ACCESS_DENIED;
+		return NT_STATUS_ACCESS_DENIED;
+	}
+
 	if (r->in.level < 1 || r->in.level > 3) {
 		return NT_STATUS_INVALID_INFO_CLASS;
 	}