Home/CVE/Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
CVE

CVE-2026-21262

Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.

Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.

HIGH · CVSS 8.8 EPSS 0.00087
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Weakness Classification

CWE-284Improper Access Control
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Affected Products & Versions

10
microsoft sql server 2016>= 13.0.6300.2 and < 13.0.6480.4
microsoft sql server 2016>= 13.0.7000.253 and < 13.0.7075.5
microsoft sql server 2017>= 14.0.1000.169 and < 14.0.2100.4
microsoft sql server 2017>= 14.0.3006.16 and < 14.0.3520.4
microsoft sql server 2019>= 15.0.2000.5 and < 15.0.2160.4
microsoft sql server 2019>= 15.0.4003.23 and < 15.4460.4
microsoft sql server 2022>= 16.0.1000.6 and < 16.0.1170.5
microsoft sql server 2022>= 16.0.4003.1 and < 16.0.4240.4
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Scoring & Timeline

8.8
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 Mar 2026 · 06:18 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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Vendor Advisories

1
msrcCVE-2026-21262Elevation of Privilege
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