5.3

CVE-2025-9039: amazon ecs Insecure Inherited Permissions

CVSS: 5.3v4.0MediumDeferred
AliasesGHSA-wm7x-ww72-r77qGO-2025-3891
Published 14-08-2025Last modified 14-08-2025
Open JSON

Vulnerability summary

CVE-2025-9039 is a medium (CVSS 5.3) Insecure Inherited Permissions vulnerability in amazon ecs. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 18.8% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.28%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2025:15469-1OPENSUSE-SU-2026:21483-1

Timeline

  1. 14-08-2025
    PublishedVulnerability first disclosed.
  2. 14-08-2025
    Last modifiedVulnerability information updated.

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).

CVSS metrics

6 scores · 3 sources · 2 versions

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

19%

Versus all other CVEs

30-day change

+0.02 pp

From 0.25% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.28%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Amazon1 product
  • ecs≥ 0.0.3, < 1.97.1
Github.com/aws1 product
  • amazon-ecs-agent≥ 0.0.3, < 1.97.1

2 vendors · 2 products

References

6 links