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CVE

CVE-2026-20803

Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a ne

Missing authentication for critical function in SQL Server allows an authorized attacker to elevate privileges over a network.

HIGH · CVSS 7.2 EPSS 0.00087
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Weakness Classification

CWE-306Missing Authentication for Critical Function
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Affected Products & Versions

3
microsoft sql server 2022>= 16.0.1000.6 and < 16.0.1165.1
microsoft sql server 2022>= 16.0.4003.1 and < 16.0.4230.2
microsoft sql server 2025all versions
▣

Scoring & Timeline

7.2
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 NVD13 Jan 2026 · 06:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/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-2026-20803Elevation of Privilege
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