diff --git a/2021/3xxx/CVE-2021-3778.json b/2021/3xxx/CVE-2021-3778.json
index d5bb1fdf09c..1ef1df1e8d1 100644
--- a/2021/3xxx/CVE-2021-3778.json
+++ b/2021/3xxx/CVE-2021-3778.json
@@ -1,18 +1,89 @@
 {
-    "data_type": "CVE",
-    "data_format": "MITRE",
-    "data_version": "4.0",
     "CVE_data_meta": {
+        "ASSIGNER": "security@huntr.dev",
         "ID": "CVE-2021-3778",
-        "ASSIGNER": "cve@mitre.org",
-        "STATE": "RESERVED"
+        "STATE": "PUBLIC",
+        "TITLE": "Heap-based Buffer Overflow in vim/vim"
     },
+    "affects": {
+        "vendor": {
+            "vendor_data": [
+                {
+                    "product": {
+                        "product_data": [
+                            {
+                                "product_name": "vim/vim",
+                                "version": {
+                                    "version_data": [
+                                        {
+                                            "version_affected": "<",
+                                            "version_value": "8.2.3409"
+                                        }
+                                    ]
+                                }
+                            }
+                        ]
+                    },
+                    "vendor_name": "vim"
+                }
+            ]
+        }
+    },
+    "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."
+                "value": "vim is vulnerable to Heap-based Buffer Overflow"
             }
         ]
+    },
+    "impact": {
+        "cvss": {
+            "attackComplexity": "LOW",
+            "attackVector": "LOCAL",
+            "availabilityImpact": "HIGH",
+            "baseScore": 7.8,
+            "baseSeverity": "HIGH",
+            "confidentialityImpact": "HIGH",
+            "integrityImpact": "HIGH",
+            "privilegesRequired": "NONE",
+            "scope": "UNCHANGED",
+            "userInteraction": "REQUIRED",
+            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
+            "version": "3.0"
+        }
+    },
+    "problemtype": {
+        "problemtype_data": [
+            {
+                "description": [
+                    {
+                        "lang": "eng",
+                        "value": "CWE-122 Heap-based Buffer Overflow"
+                    }
+                ]
+            }
+        ]
+    },
+    "references": {
+        "reference_data": [
+            {
+                "name": "https://huntr.dev/bounties/d9c17308-2c99-4f9f-a706-f7f72c24c273",
+                "refsource": "CONFIRM",
+                "url": "https://huntr.dev/bounties/d9c17308-2c99-4f9f-a706-f7f72c24c273"
+            },
+            {
+                "name": "https://github.com/vim/vim/commit/65b605665997fad54ef39a93199e305af2fe4d7f",
+                "refsource": "MISC",
+                "url": "https://github.com/vim/vim/commit/65b605665997fad54ef39a93199e305af2fe4d7f"
+            }
+        ]
+    },
+    "source": {
+        "advisory": "d9c17308-2c99-4f9f-a706-f7f72c24c273",
+        "discovery": "EXTERNAL"
     }
-}
\ No newline at end of file
+}