Extreme Platform ONE up to 25.10.0-103 IQ XIQ API Endpoint /IAM-issued race condition

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in Extreme Platform ONE up to 25.10.0-103 and classified as problematic. This affects an unknown part of the file /IAM-issued of the component IQ XIQ API Endpoint. The manipulation leads to race condition. This vulnerability is documented as CVE-2026-9831. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Extreme Platform ONE up to 25.10.0-103. This issue affects an unknown part of the file /IAM-issued of the component IQ XIQ API Endpoint. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. Impacted is confidentiality. The summary by CVE is:

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.

The weakness was released by Sebastian Koller. It is possible to read the advisory at community.extremenetworks.com. The identification of this vulnerability is CVE-2026-9831 since 05/28/2026. The exploitation is known to be difficult. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 25.10.0-104 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-33445). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.6

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.3
CNA Vector (ExtremeNetworks): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Platform ONE 25.10.0-104

Timelineinfo

05/28/2026 CVE reserved
05/30/2026 +2 days Advisory disclosed
05/30/2026 +0 days VulDB entry created
05/30/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: community.extremenetworks.com
Researcher: Sebastian Koller
Status: Confirmed

CVE: CVE-2026-9831 (🔒)
GCVE (CVE): GCVE-0-2026-9831
GCVE (VulDB): GCVE-100-367391
EUVD: 🔒

Entryinfo

Created: 05/30/2026 07:39
Updated: 05/30/2026 08:28
Changes: 05/30/2026 07:39 (65), 05/30/2026 08:28 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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