diff --git a/2020/20xxx/CVE-2020-20227.json b/2020/20xxx/CVE-2020-20227.json
index 883c57e758f..964d4ca51b8 100644
--- a/2020/20xxx/CVE-2020-20227.json
+++ b/2020/20xxx/CVE-2020-20227.json
@@ -56,6 +56,16 @@
                 "url": "https://mikrotik.com/",
                 "refsource": "MISC",
                 "name": "https://mikrotik.com/"
+            },
+            {
+                "refsource": "FULLDISC",
+                "name": "20210511 Four vulnerabilities found in MikroTik's RouterOS",
+                "url": "http://seclists.org/fulldisclosure/2021/May/23"
+            },
+            {
+                "refsource": "MISC",
+                "name": "http://packetstormsecurity.com/files/162533/MikroTik-RouterOS-Memory-Corruption.html",
+                "url": "http://packetstormsecurity.com/files/162533/MikroTik-RouterOS-Memory-Corruption.html"
             }
         ]
     }