CVE-2026-66820
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Improper SQL Command Neutralization in SQL Server
Vulnerability report for CVE-2026-66820, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-08
Last updated on: 2026-09-16
Assigner: Microsoft Corporation
Description
Description
Improper neutralization of special elements used in an sql command ('sql injection') 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_2022 | to 16.0.1200.5 (exc) |
| microsoft | sql_server_2022 | From 16.0.4003.1 (inc) to 16.0.4275.2 (exc) |
| microsoft | sql_server_2017 | to 14.0.2130.4 (exc) |
| microsoft | sql_server_2017 | From 14.0.3006.16 (inc) to 14.0.3550.4 (exc) |
| microsoft | sql_server_2019 | to 15.0.2190.7 (exc) |
| microsoft | sql_server_2019 | From 15.0.4003.23 (inc) to 15.0.4490.9 (exc) |
| microsoft | sql_server_2025 | to 17.0.1135.8 (exc) |
| microsoft | sql_server_2025 | From 17.0.4006.2 (inc) to 17.0.4085.5 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-89 | The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data. |
