SQL Server
CVE-2023-21528 — Microsoft SQL Server Remote Code Execution Vulnerability
Executive Summary
None
Overview
7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.8
EPSS Score
0.00393
probability of exploitation in the next 30 days
0.30925 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
17 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft SQL Server 2008 for 32-bit Systems Service Pack 4 (QFE) | 5020863 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2008 for x64-Based Systems Service Pack 4 (QFE) | 5020863 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2008 R2 for 32-Bit Systems Service Pack 3 (QFE) | 5021112 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2008 R2 for x64-Based Systems Service Pack 3 (QFE) | 5021112 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2012 for 32-bit Systems Service Pack 4 (QFE) | 5021123 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2012 for x64-based Systems Service Pack 4 (QFE) | 5021123 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2014 Service Pack 3 for 32-bit Systems (CU 4) | 5021045 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2014 Service Pack 3 for 32-bit Systems (GDR) | 5021037 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2014 Service Pack 3 for x64-based Systems (CU 4) | 5021045 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2014 Service Pack 3 for x64-based Systems (GDR) | 5021037 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 (GDR) | 5021129 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2016 for x64-based Systems Service Pack 3 Azure Connect Feature Pack | 5021128 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2017 for x64-based Systems (CU 31) | 5021126 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2017 for x64-based Systems (GDR) | 5021127 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2019 for x64-based Systems (CU 18) | 5021124 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2019 for x64-based Systems (GDR) | 5021125 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft SQL Server 2022 for x64-based Systems (GDR) | 5021522 (Security Update) |
Important | Remote Code Execution | Maybe |
Patches
12 patches
| Article | Type | Restart |
|---|---|---|
5020863 |
Security Update | Maybe |
5021112 |
Security Update | Maybe |
5021123 |
Security Update | Maybe |
5021045 |
Security Update | Maybe |
5021037 |
Security Update | Maybe |
5021129 |
Security Update | Maybe |
5021128 |
Security Update | Maybe |
5021126 |
Security Update | Maybe |
5021127 |
Security Update | Maybe |
5021124 |
Security Update | Maybe |
5021125 |
Security Update | Maybe |
5021522 |
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
Nicolas Joly of MSRC
References
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