Request-url-http-3a-2f-2f169.254.169.254-2flatest-2fmeta Data-2fiam-2fsecurity Credentials-2f May 2026

The Instance Metadata Service (IMDS) endpoint, specifically the 169.254.169.254 path, acts as a critical vulnerability, allowing attackers to leverage Server-Side Request Forgery (SSRF) to steal temporary IAM security credentials. To mitigate this risk, security best practices demand enforcing IMDSv2, implementing strict IAM least-privilege roles, and utilizing network-level blocks. Read the full technical breakdown at Medium.

The Goal: The attacker aims to steal the temporary credentials, which can then be used from outside the AWS environment to gain unauthorized access to your cloud resources, such as S3 buckets or other EC2 instances. IMDS Versioning: Audit IAM Roles : Regularly review the permissions

• Audit IAM Roles: Regularly review the permissions associated with IAM roles to ensure they align with operational needs.
• Instance Configuration: Ensure EC2 instances are configured to use the latest metadata service and are not exposing sensitive data.

We can leverage this to make a request to http://169.254.169.254 . * To determine if the EC2 instance has an IAM role associated w... Hacking The Cloud What is 169.254.169.254? - Kontra Hands-on Labs 5 Nov 2024 — We can leverage this to make a request to http://169