CVE-2026-21262: CWE-284: Improper Access Control in Microsoft Microsoft SQL Server 2016 Service Pack 3 (GDR)
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability in Microsoft SQL Server 2016 Service Pack 3 (GDR) involves improper access control (CWE-284), enabling an authorized attacker to elevate their privileges remotely over the network. The CVSS 3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate the issue as detailed in their security update advisory.
Potential Impact
Successful exploitation allows an attacker with some level of authorization to escalate privileges, potentially gaining higher-level access within the SQL Server environment. This can lead to full compromise of the database server's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users of Microsoft SQL Server 2016 Service Pack 3 (GDR) version 13.0.0 should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21262 to remediate this vulnerability.
CVE-2026-21262: CWE-284: Improper Access Control in Microsoft Microsoft SQL Server 2016 Service Pack 3 (GDR)
Description
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Microsoft SQL Server 2016 Service Pack 3 (GDR) involves improper access control (CWE-284), enabling an authorized attacker to elevate their privileges remotely over the network. The CVSS 3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate the issue as detailed in their security update advisory.
Potential Impact
Successful exploitation allows an attacker with some level of authorization to escalate privileges, potentially gaining higher-level access within the SQL Server environment. This can lead to full compromise of the database server's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users of Microsoft SQL Server 2016 Service Pack 3 (GDR) version 13.0.0 should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21262 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-11T21:02:05.737Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21262","vendor":"Microsoft"}]
Threat ID: 69b05626ea502d3aa87d6879
Added to database: 03/10/2026, 17:34:30 UTC
Last enriched: 06/19/2026, 20:23:54 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 895
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