diff --git a/ASCOfficeDocFile/DocDocxConverter/VMLShapeMapping.cpp b/ASCOfficeDocFile/DocDocxConverter/VMLShapeMapping.cpp
index 0059d578c1..4597d7e3f5 100644
--- a/ASCOfficeDocFile/DocDocxConverter/VMLShapeMapping.cpp
+++ b/ASCOfficeDocFile/DocDocxConverter/VMLShapeMapping.cpp
@@ -1259,7 +1259,7 @@ namespace DocFileFormat
 				{
 					//it's a bitmap image
 					BitmapBlip* bitBlip = static_cast<BitmapBlip*>(RecordFactory::ReadRecord(&reader, 0));
-					if (bitBlip)
+					if ((bitBlip) && (bitBlip->m_pvBits))
 					{
 						m_ctx->_docx->ImagesList.push_back(ImageFileStructure(GetTargetExt(oBlip->btWin32), 
 							vector<unsigned char>(bitBlip->m_pvBits, (bitBlip->m_pvBits + bitBlip->pvBitsSize)), oBlip->btWin32));
diff --git a/ASCOfficeDocFile/DocDocxConverter/VirtualStreamReader.h b/ASCOfficeDocFile/DocDocxConverter/VirtualStreamReader.h
index 4c7c7739a1..2440fd4d9e 100644
--- a/ASCOfficeDocFile/DocDocxConverter/VirtualStreamReader.h
+++ b/ASCOfficeDocFile/DocDocxConverter/VirtualStreamReader.h
@@ -27,7 +27,7 @@ public:
 	{
 		unsigned short rdUShort = 0;
 
-		if ( stream != NULL )
+		if ( (stream != NULL) && (position + 2 < stream->size()))
 		{		
 			stream->seek( position );
 			stream->read((unsigned char*)(&rdUShort), sizeof( rdUShort ));
@@ -42,7 +42,7 @@ public:
 	{
 		short rdShort = 0;
 
-		if ( stream != NULL )
+		if ( (stream != NULL) && (position + 2 < stream->size()))
 		{
 			stream->seek( position );
 			stream->read((unsigned char*)(&rdShort), sizeof( rdShort ));
@@ -57,7 +57,7 @@ public:
 	{
 		int rdInt = 0;
 
-		if ( stream != NULL )
+		if ( (stream != NULL) && (position + 4 < stream->size()))
 		{
 			stream->seek( position );
 			stream->read( (unsigned char*) &rdInt, sizeof( rdInt ) );
@@ -72,7 +72,7 @@ public:
 	{
 		int rdUInt = 0;
 
-		if ( stream != NULL )
+		if ( (stream != NULL) && (position + 4 < stream->size()))
 		{
 			stream->seek( position );
 			stream->read((unsigned char*) &rdUInt, sizeof( rdUInt ) );
@@ -87,7 +87,7 @@ public:
 	{
 		unsigned char rdByte = 0;
 
-		if ( this->stream != NULL )
+		if ( (stream != NULL) && (position + 1 < stream->size()))
 		{
 			stream->seek( position);
 			stream->read( (unsigned char*)&rdByte, sizeof( rdByte ) );
@@ -102,7 +102,7 @@ public:
 	{
 		unsigned char *rdBytes = NULL;
 
-		if ( ( stream != NULL ) && ( count > 0 ) )
+		if ( ( stream != NULL ) && ( count > 0 ) && (position + count < stream->size()))
 		{
 			rdBytes = new unsigned char[count];
 
@@ -221,7 +221,6 @@ public:
 
 private:
 
-	POLE::uint64 position;
-	//std::streampos	position;
+	POLE::uint64	position;
 	POLE::Stream*	stream;
 };