diff --git a/2018/20xxx/CVE-2018-20340.json b/2018/20xxx/CVE-2018-20340.json
new file mode 100644
index 00000000000..76d25c5af50
--- /dev/null
+++ b/2018/20xxx/CVE-2018-20340.json
@@ -0,0 +1,18 @@
+{
+   "CVE_data_meta" : {
+      "ASSIGNER" : "cve@mitre.org",
+      "ID" : "CVE-2018-20340",
+      "STATE" : "RESERVED"
+   },
+   "data_format" : "MITRE",
+   "data_type" : "CVE",
+   "data_version" : "4.0",
+   "description" : {
+      "description_data" : [
+         {
+            "lang" : "eng",
+            "value" : "** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem.  When the candidate has been publicized, the details for this candidate will be provided."
+         }
+      ]
+   }
+}
diff --git a/2018/5xxx/CVE-2018-5201.json b/2018/5xxx/CVE-2018-5201.json
index 9bb62aea7d4..345c61c6c79 100644
--- a/2018/5xxx/CVE-2018-5201.json
+++ b/2018/5xxx/CVE-2018-5201.json
@@ -34,7 +34,7 @@
       "description_data" : [
          {
             "lang" : "eng",
-            "value" : "Hancom Office 2018, Hancom Office NEO, Hancom Office 2014, Hancom Office 2010 have a heap overflow vulnerability when handling Compound File in document. This result in a program crash or denial of service conditions."
+            "value" : "Hancom Office 2018 10.0.0.8214 and earlier, Hancom Office NEO 9.6.1.10472 and earlier, Hancom Office 2014 9.1.1.4540 and earlier, Hancom Office 2010 8.5.8.1724 and earlier versions have a heap overflow vulnerability when handling Compound File in document. This result in a program crash or denial of service conditions."
          }
       ]
    },
@@ -53,7 +53,8 @@
    "references" : {
       "reference_data" : [
          {
-            "refsource" : "CONFIRM",
+            "name" : "https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=30116",
+            "refsource" : "MISC",
             "url" : "https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=30116"
          }
       ]
diff --git a/2018/5xxx/CVE-2018-5202.json b/2018/5xxx/CVE-2018-5202.json
index a7e50cc25ba..8d78a776ccf 100644
--- a/2018/5xxx/CVE-2018-5202.json
+++ b/2018/5xxx/CVE-2018-5202.json
@@ -37,7 +37,7 @@
       "description_data" : [
          {
             "lang" : "eng",
-            "value" : "SKCertService contains a vulnerability that could allow remote attacker to execute arbitrary code. This vulnerability exists due to the way .dll files are loaded by SKCertService.  It allows an attacker to load a .dll of the attacker's choosing that could execute arbitrary code without the user's knowledge."
+            "value" : "SKCertService 2.5.5 and earlier contains a vulnerability that could allow remote attacker to execute arbitrary code. This vulnerability exists due to the way .dll files are loaded by SKCertService. It allows an attacker to load a .dll of the attacker's choosing that could execute arbitrary code without the user's knowledge."
          }
       ]
    },
@@ -56,7 +56,8 @@
    "references" : {
       "reference_data" : [
          {
-            "refsource" : "CONFIRM",
+            "name" : "https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=30119",
+            "refsource" : "MISC",
             "url" : "https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=30119"
          }
       ]