diff --git a/2018/20xxx/CVE-2018-20092.json b/2018/20xxx/CVE-2018-20092.json
index 8eaaf1c2ab3..b6820bc521a 100644
--- a/2018/20xxx/CVE-2018-20092.json
+++ b/2018/20xxx/CVE-2018-20092.json
@@ -56,6 +56,11 @@
                 "name": "https://www.ptc.com/en/documents/security/coordinated-vulnerability-disclosure/security-vulnerabilities",
                 "refsource": "CONFIRM",
                 "url": "https://www.ptc.com/en/documents/security/coordinated-vulnerability-disclosure/security-vulnerabilities"
+            },
+            {
+                "refsource": "MISC",
+                "name": "https://www.doyler.net/security-not-included/ptc-thingworx-vulnerability",
+                "url": "https://www.doyler.net/security-not-included/ptc-thingworx-vulnerability"
             }
         ]
     }
diff --git a/2019/11xxx/CVE-2019-11477.json b/2019/11xxx/CVE-2019-11477.json
index 55d530aef6b..f70c1eafcdb 100644
--- a/2019/11xxx/CVE-2019-11477.json
+++ b/2019/11xxx/CVE-2019-11477.json
@@ -136,6 +136,11 @@
                 "refsource": "CONFIRM",
                 "name": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193",
                 "url": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193"
+            },
+            {
+                "refsource": "CERT-VN",
+                "name": "VU#905115",
+                "url": "https://www.kb.cert.org/vuls/id/905115"
             }
         ]
     },
diff --git a/2019/11xxx/CVE-2019-11478.json b/2019/11xxx/CVE-2019-11478.json
index aa6b32768dd..a67909b3b3c 100644
--- a/2019/11xxx/CVE-2019-11478.json
+++ b/2019/11xxx/CVE-2019-11478.json
@@ -135,6 +135,11 @@
                 "refsource": "CONFIRM",
                 "name": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193",
                 "url": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193"
+            },
+            {
+                "refsource": "CERT-VN",
+                "name": "VU#905115",
+                "url": "https://www.kb.cert.org/vuls/id/905115"
             }
         ]
     },
diff --git a/2019/11xxx/CVE-2019-11479.json b/2019/11xxx/CVE-2019-11479.json
index 95b23216f33..5eb5fc1fdb6 100644
--- a/2019/11xxx/CVE-2019-11479.json
+++ b/2019/11xxx/CVE-2019-11479.json
@@ -139,6 +139,11 @@
                 "refsource": "CONFIRM",
                 "name": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193",
                 "url": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193"
+            },
+            {
+                "refsource": "CERT-VN",
+                "name": "VU#905115",
+                "url": "https://www.kb.cert.org/vuls/id/905115"
             }
         ]
     },
diff --git a/2019/12xxx/CVE-2019-12921.json b/2019/12xxx/CVE-2019-12921.json
new file mode 100644
index 00000000000..9b9ecedcb5d
--- /dev/null
+++ b/2019/12xxx/CVE-2019-12921.json
@@ -0,0 +1,18 @@
+{
+    "data_type": "CVE",
+    "data_format": "MITRE",
+    "data_version": "4.0",
+    "CVE_data_meta": {
+        "ID": "CVE-2019-12921",
+        "ASSIGNER": "cve@mitre.org",
+        "STATE": "RESERVED"
+    },
+    "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."
+            }
+        ]
+    }
+}
\ No newline at end of file