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 (CVE-2026-21262) affects Microsoft SQL Server 2016 Service Pack 3 (GDR) version 13.0.0 and involves improper access control (CWE-284). It enables an attacker who already has some level of authorization to elevate their privileges remotely over a network connection. The CVSS 3.1 vector indicates the attack requires network access, low attack complexity, and privileges but no user interaction, with high impact on confidentiality, integrity, and availability. The vulnerability is officially published and a patch is available from Microsoft.
Potential Impact
An attacker with authorized access to the affected SQL Server instance can exploit this vulnerability to gain elevated privileges, potentially leading to full system compromise, data disclosure, data modification, or denial of service. The high CVSS score reflects the critical nature of the impact on confidentiality, integrity, and availability of the system.
Mitigation Recommendations
A patch is available to remediate this vulnerability. It is recommended to apply the official Microsoft update for SQL Server 2016 Service Pack 3 (GDR) version 13.0.0 as soon as possible to prevent exploitation. No additional vendor advisory content is provided, so check Microsoft's official security update channels for the exact patch and installation instructions.
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-21262) affects Microsoft SQL Server 2016 Service Pack 3 (GDR) version 13.0.0 and involves improper access control (CWE-284). It enables an attacker who already has some level of authorization to elevate their privileges remotely over a network connection. The CVSS 3.1 vector indicates the attack requires network access, low attack complexity, and privileges but no user interaction, with high impact on confidentiality, integrity, and availability. The vulnerability is officially published and a patch is available from Microsoft.
Potential Impact
An attacker with authorized access to the affected SQL Server instance can exploit this vulnerability to gain elevated privileges, potentially leading to full system compromise, data disclosure, data modification, or denial of service. The high CVSS score reflects the critical nature of the impact on confidentiality, integrity, and availability of the system.
Mitigation Recommendations
A patch is available to remediate this vulnerability. It is recommended to apply the official Microsoft update for SQL Server 2016 Service Pack 3 (GDR) version 13.0.0 as soon as possible to prevent exploitation. No additional vendor advisory content is provided, so check Microsoft's official security update channels for the exact patch and installation instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-11T21:02:05.737Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69b05626ea502d3aa87d6879
Added to database: 3/10/2026, 5:34:30 PM
Last enriched: 4/18/2026, 2:09:06 PM
Last updated: 4/28/2026, 10:46:24 AM
Views: 718
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