diff --git a/codec/decoder/core/inc/error_code.h b/codec/decoder/core/inc/error_code.h
index 5ded905c..1e1f8f2f 100644
--- a/codec/decoder/core/inc/error_code.h
+++ b/codec/decoder/core/inc/error_code.h
@@ -117,6 +117,7 @@ ERR_INFO_INVALID_SLICE_ALPHA_C0_OFFSET_DIV2,
 ERR_INFO_INVALID_SLICE_BETA_OFFSET_DIV2,
 ERR_INFO_FMO_INIT_FAIL,
 ERR_INFO_SLICE_TYPE_OVERFLOW,
+ERR_INFO_INVALID_CABAC_INIT_IDC,
 ERR_INFO_INVALID_QP,
 ERR_INFO_INVALID_PIC_INIT_QS,
 ERR_INFO_INVALID_CHROMA_QP_INDEX_OFFSET,
diff --git a/codec/decoder/core/src/decoder_core.cpp b/codec/decoder/core/src/decoder_core.cpp
index 2180fd7e..8bc0f8f1 100644
--- a/codec/decoder/core/src/decoder_core.cpp
+++ b/codec/decoder/core/src/decoder_core.cpp
@@ -469,6 +469,7 @@ void DecodeNalHeaderExt (PNalUnit pNal, uint8_t* pSrc) {
 #define SLICE_HEADER_INTER_LAYER_ALPHAC0_BETA_OFFSET_MIN -12
 #define SLICE_HEADER_INTER_LAYER_ALPHAC0_BETA_OFFSET_MAX 12
 #define MAX_NUM_REF_IDX_L0_ACTIVE_MINUS1 15
+#define SLICE_HEADER_CABAC_INIT_IDC_MAX 2
 /*
  *	decode_slice_header_avc
  *	Parse slice header of bitstream in avc for storing data structure
@@ -729,6 +730,8 @@ int32_t ParseSliceHeaderSyntaxs (PWelsDecoderContext pCtx, PBitStringAux pBs, co
     if (pSliceHead->eSliceType != I_SLICE && pSliceHead->eSliceType != SI_SLICE) {
       WELS_READ_VERIFY (BsGetUe (pBs, &uiCode));
       pSliceHead->iCabacInitIdc = uiCode;
+      WELS_CHECK_SE_UPPER_ERROR (pSliceHead->iCabacInitIdc, SLICE_HEADER_CABAC_INIT_IDC_MAX, "cabac_init_idc",
+                                 ERR_INFO_INVALID_CABAC_INIT_IDC);
     } else
       pSliceHead->iCabacInitIdc = 0;
   }