CVE-2026-9831

MEDIUM EPSS 6.9%

Published May 29, 20261mo ago · Modified Jun 17, 20262w ago

6.3 CVSS 3.1

Medium

Published May 29, 2026 1mo ago

Last Modified Jun 17, 2026 2w ago

Description

A race condition in the shared Extreme Platform ONE IAM Gateway API-key authentication path could, under specific high-concurrency traffic conditions, intermittently allow requests authenticated with an Extreme Platform ONE /IAM-issued API key to receive response data for another tenant. The issue was observed through ExtremeCloud IQ/XIQ API endpoints and validated against both XIQ/XAPI and Extreme Platform ONE /Common Services API paths. XIQ-native tokens and standard OAuth/Bearer JWT authentication were not affected.

CVSS Details

Base Score

6.3

Exploitability

1.8

Impact

4.0

Vector string

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

Attack Vector Network

Attack Complexity High

Privileges Required Low

User Interaction None

Scope Changed

Confidentiality High

Integrity None

Availability None

Threat Intelligence

EPSS Exploit Probability

6.9% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 2

CWE-362

CWE-488

References 1

community.extremenetworks.com https://community.extremenetworks.com/t5/security-advisories-formerly/sa-2026-048-extremecloud-iq-cross-tenant-data-exposure-via/ba-p/121851

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.