Improper neutralization of inputs used in an OS command in the FSx Windows File Server volume mounting component in Amazon ECS Agent on Windows before version 1.103.0 might allow a remote authenticated threat actor to execute shell commands with SYSTEM privileges on the underlying host via a specially crafted username field in an ECS task definition. This issue requires permissions to register ECS task definitions or write to the Secrets Manager or SSM Parameter Store credentials used by the FSx volume configuration. To remediate this issue, users should upgrade to version 1.103.0.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://aws.amazon.com/security/security-bulletins/2026-024-aws/ Vendor Advisory
- https://github.com/aws/amazon-ecs-agent/security/advisories/GHSA-fc67-c4hg-q653 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · amazonNVD modified 2026-10-26 21:10
Affected (CPE criteria) 1
cpe:2.3:a:amazon:amazon_ecs_container_agent:*:*:*:*:*:*:*:*