🛡️ CVE-2025-9039
🟡 CVSS 4.3 — Medium ✅ No Known Exploit CWE-200 NVD
4.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

We identified an issue in the Amazon ECS agent where, under certain conditions, an introspection server could be accessed off-host by another instance if the instances are in the same security group or if their security groups allow incoming connections that include the port where the server is hosted. This issue does not affect instances where the option to allow off-host access to the introspection server is set to 'false'. This issue has been addressed in ECS agent version 1.97.1. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes. If customers cannot update to the latest AMI, they can modify the Amazon EC2 security groups to restrict incoming access to the introspection server port (51678).

Details

Severity Medium
CVSS Score 4.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE CWE-200
Public Exploit ✅ No
Source NVD
Published 2025-08-14
Updated 2026-06-15
Modified 2025-08-18
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/aws/amazon-ecs-agent — —
unknown — —

Similar Threats

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