diff --git a/source3/libsmb/libsmb_file.c b/source3/libsmb/libsmb_file.c
index ff18d569757..5861718d672 100644
--- a/source3/libsmb/libsmb_file.c
+++ b/source3/libsmb/libsmb_file.c
@@ -470,7 +470,7 @@ SMBC_getatr(SMBCCTX * context,
 	mode_t mode = S_IFREG;
 	struct cli_credentials *creds = NULL;
 	TALLOC_CTX *frame = talloc_stackframe();
-	NTSTATUS status;
+	NTSTATUS status = NT_STATUS_ACCESS_DENIED;
 
 	if (!context || !context->internal->initialized) {
 		TALLOC_FREE(frame);
diff --git a/source4/auth/sam.c b/source4/auth/sam.c
index 1445adf2261..bd8219d7335 100644
--- a/source4/auth/sam.c
+++ b/source4/auth/sam.c
@@ -1581,7 +1581,7 @@ NTSTATUS authsam_logon_success_accounting(struct ldb_context *sam_ctx,
 	NTTIME sync_interval_nt = 0;
 	bool am_rodc = false;
 	bool txn_active = false;
-	bool need_db_reread;
+	bool need_db_reread = false;
 
 	mem_ctx = talloc_new(msg);
 	if (mem_ctx == NULL) {
diff --git a/source4/dsdb/common/rodc_helper.c b/source4/dsdb/common/rodc_helper.c
index b4982aee9ed..5ed60e0af43 100644
--- a/source4/dsdb/common/rodc_helper.c
+++ b/source4/dsdb/common/rodc_helper.c
@@ -243,7 +243,7 @@ WERROR samdb_confirm_rodc_allowed_to_repl_to(struct ldb_context *sam_ctx,
 {
 	TALLOC_CTX *frame = talloc_stackframe();
 	WERROR werr;
-	uint32_t num_token_sids;
+	uint32_t num_token_sids = 0;
 	struct dom_sid *token_sids;
 	const struct dom_sid *object_sid = NULL;