EUVD-2026-26412CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
8DescriptionNVD
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.
AnalysisAI
Command injection in Amazon ECS Agent on Windows allows authenticated attackers with task definition permissions to execute arbitrary shell commands with SYSTEM privileges on the underlying host. The vulnerability exists in the FSx Windows File Server volume mounting component (versions prior to 1.103.0), where username field input is not properly sanitized before being passed to OS commands. …
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RemediationAI
Within 24 hours: inventory all Windows ECS clusters and identify agents running versions below 1.103.0 using AWS Systems Manager or ECS API queries. Within 7 days: update ECS Agent to version 1.103.0 or later across all affected Windows instances; apply updates during maintenance windows to avoid container service interruption. …
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