CVE-2025-14503

Name: CVE-2025-14503
Creator: NVD / NIST
Published: 2025-12-15T20:15:49.19+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 0.43%

Last modified Jun 17, 2026

CVE-2025-14503 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. An overly-permissive IAM trust policy in the Harmonix on AWS framework may allow IAM principals in the same AWS account to escalate privileges via role assumption. The sample code for the EKS environment provisioning role is configured to trust the account root principal, which may enable any IAM principal in the same AWS account with sts:AssumeRole permissions to assume the role with administrative privileges. We recommend customers upgrade to Harmonix on AWS v0.4.2 or later if you have deployed the framework using versions v0.3.0 through v0.4.1.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

An overly-permissive IAM trust policy in the Harmonix on AWS framework may allow IAM principals in the same AWS account to escalate privileges via role assumption. The sample code for the EKS environment provisioning role is configured to trust the account root principal, which may enable any IAM principal in the same AWS account with sts:AssumeRole permissions to assume the role with administrative privileges. We recommend customers upgrade to Harmonix on AWS v0.4.2 or later if you have deployed the framework using versions v0.3.0 through v0.4.1.

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

8.6/10

CVSS:4.0/AV:N/AC:L/AT:N/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

0.43%

34.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-266

Affected Software

Vendor	Product	Versions
Amazon	Harmonix	>= 0.3.0, < 0.4.2

References

https://aws.amazon.com/security/security-bulletins/AWS-2025-031/Patch, Vendor Advisory
https://github.com/awslabs/harmonix/pull/189Issue Tracking
https://github.com/awslabs/harmonix/security/advisories/GHSA-qm86-gqrq-mqcwVendor Advisory

Timeline

Published: Dec 15, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-14503?

How severe is CVE-2025-14503?

CVE-2025-14503 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2025-14503?

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-2025-14503?

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

Scan your code now

Source: NVD / NIST