diff --git a/2021/27xxx/CVE-2021-27645.json b/2021/27xxx/CVE-2021-27645.json
new file mode 100644
index 00000000000..832599c640f
--- /dev/null
+++ b/2021/27xxx/CVE-2021-27645.json
@@ -0,0 +1,62 @@
+{
+    "CVE_data_meta": {
+        "ASSIGNER": "cve@mitre.org",
+        "ID": "CVE-2021-27645",
+        "STATE": "PUBLIC"
+    },
+    "affects": {
+        "vendor": {
+            "vendor_data": [
+                {
+                    "product": {
+                        "product_data": [
+                            {
+                                "product_name": "n/a",
+                                "version": {
+                                    "version_data": [
+                                        {
+                                            "version_value": "n/a"
+                                        }
+                                    ]
+                                }
+                            }
+                        ]
+                    },
+                    "vendor_name": "n/a"
+                }
+            ]
+        }
+    },
+    "data_format": "MITRE",
+    "data_type": "CVE",
+    "data_version": "4.0",
+    "description": {
+        "description_data": [
+            {
+                "lang": "eng",
+                "value": "The nameserver caching daemon (nscd) in the GNU C Library (aka glibc or libc6) 2.29 through 2.33, when processing a request for netgroup lookup, may crash due to a double-free, potentially resulting in degraded service or Denial of Service on the local system. This is related to netgroupcache.c."
+            }
+        ]
+    },
+    "problemtype": {
+        "problemtype_data": [
+            {
+                "description": [
+                    {
+                        "lang": "eng",
+                        "value": "n/a"
+                    }
+                ]
+            }
+        ]
+    },
+    "references": {
+        "reference_data": [
+            {
+                "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=27462",
+                "refsource": "MISC",
+                "name": "https://sourceware.org/bugzilla/show_bug.cgi?id=27462"
+            }
+        ]
+    }
+}
\ No newline at end of file