diff --git a/.changeset/three-glasses-judge.md b/.changeset/three-glasses-judge.md
new file mode 100644
index 00000000000..fa727d89eed
--- /dev/null
+++ b/.changeset/three-glasses-judge.md
@@ -0,0 +1,5 @@
+---
+'@firebase/util': patch
+---
+
+Fix for third party window content that cannot access IndexedDB if the browser is set to never accept third party cookies on Firefox.
diff --git a/packages/util/src/environment.ts b/packages/util/src/environment.ts
index 84fed3ca099..5c9be0d26c0 100644
--- a/packages/util/src/environment.ts
+++ b/packages/util/src/environment.ts
@@ -140,7 +140,11 @@ export function isSafari(): boolean {
  * @return true if indexedDB is supported by current browser/service worker context
  */
 export function isIndexedDBAvailable(): boolean {
-  return typeof indexedDB === 'object';
+  try {
+    return typeof indexedDB === 'object';
+  } catch (e) {
+    return false;
+  }
 }
 
 /**