Is this vulnerability remotely exploitable from the internet?

It is not typically exploitable by arbitrary external users. Exploitation requires authenticated access to AWS resources that can influence FSx volume configuration, such as the ability to modify ECS task definitions or the secrets and parameters used for FSx credentials. However, in multi-tenant or poorly segmented environments, this may still be reachable by an internal or compromised principal.

What level of access does an attacker need to exploit this issue?

An attacker needs permissions that allow: - Registering or updating ECS task definitions that reference FSx Windows File Server volumes and specify a username, or - Writing to AWS Secrets Manager or SSM Parameter Store entries that are used as the username value in those FSx configurations. Without such control over the FSx username field, exploitation is not feasible.

What is the safest general fix pattern for developers and operators?

The safest pattern is to avoid building shell commands from external input at all, using dedicated APIs or strongly typed library calls for sensitive operations like network share mounting. When shell use is unavoidable, validate username and credential fields against strict, minimal formats; pass them as separate arguments rather than concatenated command strings; and ensure the calling component runs with the least privilege necessary.

Severity:

HIGH RISK

(7.2)

OS Command Injection (CWE-78) in Amazon ECS Agent FSx Windows File Server Volume Mounting

CVE-2026-7461

Published:

Apr 30, 2026

Status:

Awaiting Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-284;CWE-434

HIGH RISK

HIGH

(7.3)

Unrestricted File Upload (CWE-434) via Engine Handler exec in MindsDB BYOM Integration

Remote Code Execution and Arbitrary File Upload

May 3, 2026

CWE-287

HIGH RISK

HIGH

(7.3)

Improper Authentication (CWE-287) in JwtAuthenticationTokenFilter of yudao-cloud Ruoyi-Vue-Pro

Authentication Bypass / Unauthorized Access

May 3, 2026

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-78

Impact:

Local Privilege Escalation to SYSTEM via Remote Authenticated Control

Severity:

HIGH RISK

(7.2)

CVSS Version:

3.1

Vulnerability Type

Category:

OS Command Injection

CWE:

CWE-78

Impact:

Local Privilege Escalation to SYSTEM via Remote Authenticated Control

Severity:

HIGH RISK

(7.2)

CVSS Version:

3.1

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OS Command Injection (CWE-78) in Amazon ECS Agent FSx Windows File Server Volume Mounting

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

Unrestricted File Upload (CWE-434) via Engine Handler exec in MindsDB BYOM Integration

HIGH RISK

HIGH

(7.3)

Improper Authentication (CWE-287) in JwtAuthenticationTokenFilter of yudao-cloud Ruoyi-Vue-Pro

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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