CVE-2026-21262
Received
Received - Intake
Improper Access Control in SQL Server Enables Privilege Escalation
Publication date: 2026-03-10
Last updated on: 2026-03-13
Assigner: Microsoft Corporation
Description
Description
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | sql_server_2016 | From 13.0.6300.2 (inc) to 13.0.6480.4 (exc) |
| microsoft | sql_server_2016 | From 13.0.7000.253 (inc) to 13.0.7075.5 (exc) |
| microsoft | sql_server_2017 | From 14.0.1000.169 (inc) to 14.0.2100.4 (exc) |
| microsoft | sql_server_2017 | From 14.0.3006.16 (inc) to 14.0.3520.4 (exc) |
| microsoft | sql_server_2019 | From 15.0.4003.23 (inc) to 15.4460.4 (exc) |
| microsoft | sql_server_2022 | From 16.0.1000.6 (inc) to 16.0.1170.5 (exc) |
| microsoft | sql_server_2022 | From 16.0.4003.1 (inc) to 16.0.4240.4 (exc) |
| microsoft | sql_server_2025 | From 17.0.1000.7 (inc) to 17.0.1105.2 (exc) |
| microsoft | sql_server_2025 | From 17.0.4006.2 (inc) to 17.0.4020.2 (exc) |
| microsoft | sql_server_2019 | From 15.0.2000.5 (inc) to 15.0.2160.4 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-284 | The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an improper access control issue in Microsoft SQL Server that allows an authorized attacker to elevate their privileges over a network.
How can this vulnerability impact me? :
An attacker who is already authorized on the network can exploit this vulnerability to gain higher privileges than intended, potentially leading to full control over the SQL Server.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know
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