diff --git a/apps/oxlint/src-js/js_config.ts b/apps/oxlint/src-js/js_config.ts
index 0e98f8954b177..b8fd3376c2aa9 100644
--- a/apps/oxlint/src-js/js_config.ts
+++ b/apps/oxlint/src-js/js_config.ts
@@ -2,6 +2,7 @@ import { basename as pathBasename } from "node:path";
 
 import { getErrorMessage } from "./utils/utils.ts";
 import { DateNow, JSONStringify } from "./utils/globals.ts";
+import { getUnsupportedTypeScriptModuleLoadHintForError } from "./utils/node_version.ts";
 
 interface JsConfigResult {
   path: string;
@@ -147,7 +148,15 @@ export async function loadJsConfigs(paths: string[]): Promise<string> {
       if (result.status === "fulfilled") {
         successes.push(result.value);
       } else {
-        errors.push({ path: paths[i], error: getErrorMessage(result.reason) });
+        const path = paths[i];
+        const unsupportedNodeHint = getUnsupportedTypeScriptModuleLoadHintForError(
+          result.reason,
+          path,
+        );
+        errors.push({
+          path,
+          error: unsupportedNodeHint ?? getErrorMessage(result.reason),
+        });
       }
     }
 
diff --git a/apps/oxlint/src-js/utils/node_version.ts b/apps/oxlint/src-js/utils/node_version.ts
new file mode 100644
index 0000000000000..b24297f4ac33d
--- /dev/null
+++ b/apps/oxlint/src-js/utils/node_version.ts
@@ -0,0 +1,41 @@
+import { extname as pathExtname } from "node:path";
+import { fileURLToPath } from "node:url";
+import { getErrorMessage } from "./utils.ts";
+
+export const NODE_TYPESCRIPT_SUPPORT_RANGE = "^20.19.0 || >=22.18.0";
+
+const TS_MODULE_EXTENSIONS = new Set([".ts", ".mts", ".cts"]);
+
+function normalizeModuleSpecifierPath(specifier: string): string {
+  if (!specifier.startsWith("file:")) return specifier;
+
+  try {
+    return fileURLToPath(specifier);
+  } catch {
+    return specifier;
+  }
+}
+
+export function isTypeScriptModuleSpecifier(specifier: string): boolean {
+  const ext = pathExtname(normalizeModuleSpecifierPath(specifier)).toLowerCase();
+  return TS_MODULE_EXTENSIONS.has(ext);
+}
+
+function isUnknownFileExtensionError(err: unknown): boolean {
+  if ((err as { code?: unknown })?.code === "ERR_UNKNOWN_FILE_EXTENSION") return true;
+
+  const message = (err as { message?: unknown })?.message;
+  return typeof message === "string" && /unknown(?: or unsupported)? file extension/i.test(message);
+}
+
+export function getUnsupportedTypeScriptModuleLoadHintForError(
+  err: unknown,
+  specifier: string,
+  nodeVersion: string = process.version,
+): string | null {
+  if (!isTypeScriptModuleSpecifier(specifier) || !isUnknownFileExtensionError(err)) {
+    return null;
+  }
+
+  return `${getErrorMessage(err)}\n\nTypeScript config files require Node.js ${NODE_TYPESCRIPT_SUPPORT_RANGE}.\nDetected Node.js ${nodeVersion}.\nPlease upgrade Node.js or use a JSON config file instead.`;
+}