---
title: AWS AMI 2026-06-18
date: 2026-06-18T00:00:00.000Z
slug: ami-2026-06-18
tags:
  - release
  - ami
description: >-
  New EC2 scope AMIs (null-runtime-88 and null-runtime-arm-19) that bring back
  SSM Session Manager access to your instances.
canonical: 'https://docs.nullplatform.com/changelog/ami-2026-06-18'
---
The EC2 scope AMIs `null-runtime-88` (x86) and `null-runtime-arm-19` (arm64) bring back SSM Session Manager access to your instances.

## Highlights

- **SSM access is back.** Since [AWS AMI 2026-04-01](/changelog/ami-2026-04-01), instances removed the vulnerable snap-based SSM agent on first boot and had no SSM access at runtime. On first boot, instances now install the native SSM agent package once snapd is gone and start it, so SSM Session Manager and Run Command work again without bringing back the vulnerable snap agent.

## Fixes

- If your scopes run `null-runtime-87` or `null-runtime-arm-18`, move them to these AMIs: on those, the native SSM agent was installed but never started, so instances showed as unreachable in SSM.

## Upgrade

The AMIs are shared with your AWS account. Find them by name (`null-runtime-88` and `null-runtime-arm-19`), set their IDs in `ami.id` of your [EC2 provider](/docs/providers/supported-integrations/compute-management/ec2-configuration), and redeploy your scopes. Each scope keeps running the previous AMI until it's redeployed. To track that rollout, see [AMI drift detection](/docs/tutorials/ami-drift).