Security readout for executives and security teams
Plain-English summary
Azure Synapse has an access-control flaw that could let a signed-in attacker gain higher privileges over the network. The issue is rated medium, but the confidentiality impact is high, so organizations using Synapse should verify Microsoft’s remediation guidance and review access controls.
Executive priority
Treat this as a moderate-priority cloud access-control issue. It does not currently have confirmed active exploitation in the supplied sources, but the possible confidentiality impact justifies prompt verification for Synapse users.
Technical view
CVE-2026-26145 is an improper access control issue in Microsoft Azure Synapse, mapped to CWE-284. The CVSS 3.1 score is 4.8 with network attack vector, high complexity, low privileges required, user interaction required, and high confidentiality impact.
Likely exposure
Exposure is limited to organizations using Microsoft Azure Synapse. The bundle does not identify specific versions, configurations, tenants, regions, or Synapse components affected.
Exploitation context
The CVSS temporal vector includes E:P, but the provided sources do not describe exploit details. CISA KEV status is false, and no supplied source states active exploitation.
Researcher notes
Public detail is sparse. The sources identify improper access control and an elevation-of-privilege outcome, but do not provide affected version granularity, exploit mechanics, or product-component scope. Avoid assumptions beyond Azure Synapse exposure.
Mitigation direction
- Review the Microsoft MSRC advisory for official remediation guidance.
- Confirm Azure Synapse environments are covered by Microsoft’s published fix or service-side remediation.
- Apply least-privilege access controls for Synapse users and managed identities.
- Audit Synapse permissions for unnecessary elevated roles.
- Monitor Microsoft guidance for any affected-scope or mitigation updates.
Validation and detection
- Inventory all Azure Synapse workspaces and associated identities.
- Check MSRC for the latest remediation status for CVE-2026-26145.
- Review role assignments for low-privilege accounts with sensitive data access.
- Inspect audit logs for unexpected Synapse privilege or access changes.
- Document whether each Synapse environment is remediated or not applicable.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-26145 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C1.23.6microsoftVulnerability scoring details
Base CVSS 3.1 score
4.8MediumVector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Microsoft Azure Synapse Elevation of Privilege VulnerabilityCVE reference, microsoft · vendor-advisory, patch
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.