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CVE-2025-14503

23
FAUCET Score

CVE-2025-14503 describes an overly-permissive IAM trust policy in Harmonix on AWS versions v0.3.0 through v0.4.1, specifically within the EKS environment provisioning role. This vulnerability allows any IAM principal in the same AWS account with sts:AssumeRole permissions to escalate privileges to administrative levels. Rated as High severity (CVSS 7.2), it presents a network-based attack vector with low complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code, the vulnerability has garnered some community discussion and media coverage, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.3.0, < 0.4.2CPE matchmatch criteria
cpe:2.3:a:amazon:harmonix:*:*:*:*:*:aws:*:*

CVSS Data

CVSS version used by this source: 4.0

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.45%
Probability of exploitation in next 30 days
EPSS Percentile
36.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0045 is in the 13th percentile among its peer group of 5,531 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

github_advisoryvendor investigatingvia nvd_reference
View patch

References

aws.amazon.com / security/security-bulletins/AWS-2025-031
PatchVendor Advisory
github.com / awslabs/harmonix/pull/189
Issue Tracking
github.com / awslabs/harmonix/security/advisories/GHSA-qm86-gqrq-mqcw
Vendor Advisory