CVE-2026-7461

Name: CVE-2026-7461
Creator: NVD / NIST
Published: 2026-04-30T19:16:10.737+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2026-7461 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

7.5/10

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

EPSS Probability

0.55%

41.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Amazon	Amazon Ecs Container Agent	>= 1.47.0, < 1.103.0

References

https://aws.amazon.com/security/security-bulletins/2026-024-aws/Vendor Advisory
https://github.com/aws/amazon-ecs-agent/releases/tag/v1.103.0Release Notes
https://github.com/aws/amazon-ecs-agent/security/advisories/GHSA-fc67-c4hg-q653Vendor Advisory

Timeline

Published: Apr 30, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-7461?

How severe is CVE-2026-7461?

CVE-2026-7461 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2026-7461?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-7461?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST