diff --git a/lib/linter.js b/lib/linter.js
index e96e713ffdb7..c5d57629fcd6 100755
--- a/lib/linter.js
+++ b/lib/linter.js
@@ -94,6 +94,10 @@ function parseJsonConfig(string, location) {
 
     // Parses a JSON-like comment by the same way as parsing CLI option.
     try {
+
+        // https://github.com/eslint/eslint/issues/9366
+        string = string.replace(/\\\\/g, "\\");
+
         items = levn.parse("Object", string) || {};
 
         // Some tests say that it should ignore invalid comments such as `/*eslint no-alert:abc*/`.