Is CVE-2025-9039 in the CISA KEV catalog?

No. CVE-2025-9039 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-9039?

CVE-2025-9039 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2025-9039?

CVE-2025-9039 has an EPSS score of 0.23% (14th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2025-9039?

No published fix for CVE-2025-9039 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2025-9039

MEDIUM

4.3

CVSS v3

NVD

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).

CWE-277

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.23%probability of exploitation in 30 days

14thpercentile

Low risk: more likely to be exploited than 14% of all known CVEs.

References

Other references3

Embed a live status badge for CVE-2025-9039

Markdown

[![CVE-2025-9039](https://tridentstack.com/cve/badge/CVE-2025-9039.svg)](https://tridentstack.com/cve/CVE-2025-9039)

HTML

<a href="https://tridentstack.com/cve/CVE-2025-9039"><img src="https://tridentstack.com/cve/badge/CVE-2025-9039.svg" alt="CVE-2025-9039"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-08-15.