> CVE-2026-9831 [MEDIUM]

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PUBLISHED
2026-05-29 22:16
MODIFIED
2026-05-29 22:16
CVSS_SCORE V3
6.3
EPSS (Prob. Exploit)
0.17%
Top 93.4%
DATA SOURCES:
NVD 🔗 2026-05-29 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-01

> 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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
EXPLOITABILITY
1.8
IMPACT
4.0

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
High (H)
Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Changed (C)
Impact s'étend au-delà du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-362 CWE-488

> CWE DETAILED DESCRIPTIONS

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization - The product contains a concurrent code sequence that 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 operating concurrently. | CWE-488: Exposure of Data Element to Wrong Session - The product does not sufficiently enforce boundaries between the states of different sessions, causing data to be provided to, or used by, the wrong session.

> HISTORIQUE DES MODIFICATIONS

Première apparition
29/05/2026 22:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') - The product contains a concurrent code sequence that requires temporary, exclusive access to a sh...
Nouvelle valeur:
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization - The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but ...
📊 ENRICHISSEMENT 01/06/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') - The product contains a concurrent code sequence that requires temporary, exclusive access to a sh...
Total des modifications: 2 Dernière mise à jour: 6 days ago

> REFERENCES

https://community.extremenetworks.com/t5/security-advisories-formerly/sa-2026-04...
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