diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
index 0a00ac8504..7bdffc55d0 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
@@ -837,6 +837,7 @@ EfiPxeBcDiscover (
   // If info isn't offered,
   //   use the cached DhcpAck and ProxyOffer packets.
   //
+  ZeroMem (&DefaultInfo, sizeof (EFI_PXE_BASE_CODE_DISCOVER_INFO));
   if (*Layer != EFI_PXE_BASE_CODE_BOOT_LAYER_INITIAL) {
 
     if (!Mode->PxeDiscoverValid || !Mode->PxeReplyReceived || (!Mode->PxeBisReplyReceived && UseBis)) {
diff --git a/NetworkPkg/UefiPxeBcDxe/PxeBcImpl.c b/NetworkPkg/UefiPxeBcDxe/PxeBcImpl.c
index 6c36d058f6..07f2b6cfc2 100644
--- a/NetworkPkg/UefiPxeBcDxe/PxeBcImpl.c
+++ b/NetworkPkg/UefiPxeBcDxe/PxeBcImpl.c
@@ -566,6 +566,7 @@ EfiPxeBcDiscover (
   //
   // There are 3 methods to get the information for discover.
   //
+  ZeroMem (&DefaultInfo, sizeof (EFI_PXE_BASE_CODE_DISCOVER_INFO));
   if (*Layer != EFI_PXE_BASE_CODE_BOOT_LAYER_INITIAL) {
     //
     // 1. Take the previous setting as the discover info.