CVE•Published 2026-05-29•Modified 2026-06-01•0 articles on news•6 live references•NVD data

CVE-2026-9831

Vulnerability data via NVD (ingested)

CVSS v3.1

6.3

MEDIUM

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

EPSS percentile

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Weaknesses (CWE)

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')CWE-488Exposure of Data Element to Wrong Session

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.

Timeline

Published 2026-05-29

Modified 2026-06-01

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-9831

Hosts Shodan has explicitly fingerprinted as vulnerable.

More intel sources (5)

Shodan report

vuln:CVE-2026-9831

Country / ASN / product breakdown for the vuln query.

Censys

vulnerabilities.cve_id: CVE-2026-9831

Censys host search filtered to this CVE id.

grep.app

CVE-2026-9831