Severity by source
Sources disagree (Medium–Critical)AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description states an 'authorized attacker,' so PR:L rather than PR:N; network vector and low complexity retained, with total technical impact giving C/I/A:H.
vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.
CVSS VectorNVD
Lifecycle Timeline
6DescriptionNVD
Improper access control in Azure Synapse allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Privilege elevation in Microsoft Azure Synapse Analytics allows a network-based, authorized attacker to bypass improper access controls and gain higher privileges than assigned. The flaw carries a critical 9.8 CVSS with full confidentiality, integrity, and availability impact, though its EPSS probability is modest (0.33%, 24th percentile) and CISA SSVC records no observed exploitation. No public exploit has been identified at time of analysis, and Microsoft has released a fix through its Security Update Guide.
Technical ContextAI
Azure Synapse Analytics is Microsoft's cloud-based enterprise analytics service that unifies data warehousing, big-data (Spark) processing, and data-integration pipelines within the Azure platform. The root cause is classified as CWE-284 (Improper Access Control), meaning the service fails to properly enforce authorization boundaries so that an already-authenticated identity can perform actions or reach resources beyond its intended permission set. Because Synapse is a multi-tenant managed cloud service, an access-control weakness in its authorization layer can affect the isolation between workspace roles, users, or tenants. The single CPE provided (cpe:2.3:a:microsoft:azure_synapse:*) is version-agnostic, consistent with a continuously-updated cloud service rather than a discretely versioned on-premises product.
RemediationAI
Because Azure Synapse is a Microsoft-managed cloud service, remediation is primarily service-side: Microsoft reports a patch is available per the Security Update Guide (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26145), and customers should confirm their workspaces are running the updated service and apply any customer-actionable steps Microsoft specifies there. No exact fix version applies given the SaaS delivery model. As compensating controls while validating the fix, restrict Synapse workspace access using Azure RBAC least-privilege role assignments, enforce network isolation via Managed Virtual Network and private endpoints to limit the network attack surface implied by AV:N, disable public network access to the workspace where feasible, and audit workspace/role assignments and Synapse activity logs for anomalous privilege changes. Tightening network access may break connectivity for integration runtimes or external clients, so validate data-pipeline dependencies before enforcing isolation.
More in Azure Synapse
View allSame weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-41444
GHSA-g6fh-wh88-hxp9