diff --git a/packages/cli/src/lib/telemetry.ts b/packages/cli/src/lib/telemetry.ts
index 1364b35a2..5c1973d85 100644
--- a/packages/cli/src/lib/telemetry.ts
+++ b/packages/cli/src/lib/telemetry.ts
@@ -429,23 +429,19 @@ const LIBRARY_EXCLUDED_INTEGRATIONS = new Set([
 ]);
 
 /**
- * Check whether `util.getSystemErrorMap` exists at setup time.
+ * Whether `util.getSystemErrorMap` is available at runtime.
+ *
  * Bun does not implement this Node.js API, which the SDK's NodeSystemError
  * integration uses in its `processEvent` hook. When missing, the hook crashes
  * during event processing instead of sending the error report (CLI-K1).
  *
- * Checked once at module load so the integration filter is a simple boolean.
+ * We detect bun via `process.versions.bun` rather than probing `node:util`
+ * directly. In a bun-compiled binary, `_require("node:util")` resolves to the
+ * bundled (build-time) Node.js util, which has `getSystemErrorMap` — even
+ * though bun's own runtime `node:util` does not. Checking the bun version
+ * is always accurate at runtime regardless of how the code was bundled (CLI-3HF).
  */
-const hasGetSystemErrorMap = (() => {
-  // oxlint-disable-next-line sentry-cli/no-silent-catch -- grandfathered silent catch — see #1531; drain by adding log.debug()/log.warn() or re-throwing.
-  try {
-    // Dynamic require to avoid bundler issues — the check only matters at runtime
-    const util = _require("node:util") as Record<string, unknown>;
-    return typeof util.getSystemErrorMap === "function";
-  } catch {
-    return false;
-  }
-})();
+const hasGetSystemErrorMap = !process.versions.bun;
 
 /** Current beforeExit handler, tracked so it can be replaced on re-init */
 let currentBeforeExitHandler: (() => void) | null = null;
diff --git a/packages/cli/test/lib/telemetry.test.ts b/packages/cli/test/lib/telemetry.test.ts
index 719e8e03e..cd1ca5626 100644
--- a/packages/cli/test/lib/telemetry.test.ts
+++ b/packages/cli/test/lib/telemetry.test.ts
@@ -87,6 +87,15 @@ describe("initSentry", () => {
     const client = initSentry(true);
     expect(client?.getOptions().release).toBe("0.0.0-dev");
   });
+
+  test("includes NodeSystemError integration on Node.js (not bun)", () => {
+    // hasGetSystemErrorMap = !process.versions.bun; on Node.js process.versions.bun
+    // is undefined, so NodeSystemError should be included. This guards against
+    // regressions where the integration is wrongly excluded on Node.js (CLI-3HF).
+    const client = initSentry(true);
+    const integration = client?.getIntegrationByName("NodeSystemError");
+    expect(integration).toBeDefined();
+  });
 });
 
 describe("withTelemetry", () => {