What is CVE-2025-14503?

CVE-2025-14503 is a high-severity vulnerability in Amazon Harmonix, classified under Incorrect Privilege Assignment. CVSS score: 7.2/10. Published 2025-12-15.

How severe is CVE-2025-14503?

High severity. CVSS v3 base score is 7.2 out of 10.

Privilege escalation in Amazon Harmonix

CVE-2025-14503

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: 0.004 (36.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Amazon Harmonix
Aws Harmonix On — versions 0.3.0

Weakness classification (CWE)

CWE-266 — Incorrect Privilege Assignment

References

ff89ba41-3aa1-4d27-914a-91399e9639e5 (patch, Issue Tracking)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (vendor-advisory, Patch, Vendor Advisory)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (Vendor Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2025-14503?: CVE-2025-14503 is a high-severity vulnerability in Amazon Harmonix, classified under Incorrect Privilege Assignment. CVSS score: 7.2/10. Published 2025-12-15.
How severe is CVE-2025-14503?: High severity. CVSS v3 base score is 7.2 out of 10.