CVE-2026-48584: Microsoft Azure Synapse Elevation of Privilege Vulnerability
CVE-2026-48584 is an elevation of privilege vulnerability in Microsoft Azure Synapse, rated Critical by Microsoft, with a CVSS 3.1 base score of 9.9 (Critical). An attacker can exploit it remotely over the network, with low privileges and without user interaction. Microsoft has not reported exploitation in the wild. The EPSS model estimates a 0.91% probability of exploitation activity in the next 30 days, higher than 61% of all scored vulnerabilities. Microsoft published it on 18 June 2026, outside Patch Tuesday. It affects 1 product in 1 product family (Azure).
Key facts
- CVE ID
- CVE-2026-48584
- Severity
- Critical CVSS 9.9
- Microsoft severity
- Critical
- Impact
- Elevation of Privilege
- Exploited in the wild
- No
- Publicly disclosed
- No
- Weakness
- CWE-250
- EPSS
- 0.91% (percentile 61%)
- CISA KEV
- Not listed
- Released
- Last updated
- Patch Tuesday
- June 2026 Patch Tuesday
- Product families
- Azure
CVSS score and vector
Microsoft scores CVE-2026-48584 at 9.9 (temporal 8.6) using CVSS 3.1. Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
| Metric | Value |
|---|---|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality impact | High |
| Integrity impact | High |
| Availability impact | High |
| Exploit code maturity | Unproven |
| Remediation level | Official fix |
| Report confidence | Confirmed |
Description
Execution with unnecessary privileges in Azure Synapse allows an authorized attacker to elevate privileges over a network.
Frequently asked questions (Microsoft)
Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?
This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency.
Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.
Affected products (1)
Azure
| Product | Security update | Type | Fixed build | Restart |
|---|---|---|---|---|
| Azure Synapse |
NIST NVD data
- NVD status
- Analyzed
- NVD CVSS
- 9.9 (CRITICAL)
- NVD weakness
- CWE-250
- Published to NVD
- NVD last modified
Affected configurations (CPE)
| Product | Vulnerable versions |
|---|---|
| azure synapse | all listed versions |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48584 (Vendor Advisory)
Acknowledgments
- nicolas joly
Revision history
| Version | Date | Description |
|---|---|---|
| 1.0 | Information published. |