CVE-2026-7461

OS Command Injection in Amazon ECS Agent via FSx Windows File Server Volume Credentials

Published Apr 30, 2026 CVSS 4.0 · 7.5 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Amazon
Amazon amazon Ecs Container Agent
CPEs cpe:2.3:a:amazon:amazon_ecs_container_agent:*:*:*:*:*:*:*:*
Vendors & Products Amazon
Amazon amazon Ecs Container Agent
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title OS Command Injection in Amazon ECS Agent via FSx Windows File Server Volume Credentials
First Time appeared Aws
Aws amazon Ecs Agent
Weaknesses CWE-78
CPEs cpe:2.3:a:aws:amazon_ecs_agent:*:*:windows:*:*:*:*:*
Vendors & Products Aws
Aws amazon Ecs Agent
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 7.5, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
AMZN
Published
Updated
May 1, 2026, 3:56 AM
Reserved
Apr 29, 2026, 6:10 PM
Status
Analyzed
Published
Apr 30, 2026, 7:16 PM
Modified
Oct 26, 2026, 9:10 PM