SQL Server
CVE-2021-1636 — Microsoft SQL Elevation of Privilege Vulnerability
Executive Summary
None
Overview
8.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
Temporal Score: 7.7
EPSS Score
0.06153
probability of exploitation in the next 30 days
0.92555 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
12 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft SQL Server 2012 for 32-bit Systems Service Pack 4 (QFE) | 4583465 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft SQL Server 2012 for x64-based Systems Service Pack 4 (QFE) | 4583465 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft SQL Server 2014 Service Pack 3 for 32-bit Systems (CU 4) | 4583462 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft SQL Server 2014 Service Pack 3 for 32-bit Systems (GDR) | 4583463 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft SQL Server 2014 Service Pack 3 for x64-based Systems (CU 4) | 4583462 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft SQL Server 2014 Service Pack 3 for x64-based Systems (GDR) | 4583463 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft SQL Server 2016 for x64-based Systems Service Pack 2 (GDR) | 4583460 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft SQL Server 2016 Service Pack 2 for x64-based Systems (CU 15) | 4583461 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft SQL Server 2017 for x64-based Systems (CU 22) | 4583457 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft SQL Server 2017 for x64-based Systems (GDR) | 4583456 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft SQL Server 2019 for x64-based Systems (CU 8) | 4583459 (Security Update) |
Important | Elevation of Privilege | Maybe |
| Microsoft SQL Server 2019 for x64-based Systems (GDR) | 4583458 (Security Update) |
Important | Elevation of Privilege | Maybe |
Patches
9 patches
| Article | Type | Restart |
|---|---|---|
4583465 |
Security Update | Maybe |
4583462 |
Security Update | Maybe |
4583463 |
Security Update | Maybe |
4583460 |
Security Update | Maybe |
4583461 |
Security Update | Maybe |
4583457 |
Security Update | Maybe |
4583456 |
Security Update | Maybe |
4583459 |
Security Update | Maybe |
4583458 |
Security Update | Maybe |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Microsoft has not published researcher acknowledgments for this CVE, or they are not yet reflected in our data source. Check the MSRC advisory directly for the most current credit information.
References
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