Use After Free Vulnerability in Microsoft SQL Server
CVE-2026-85876

7HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Sql Server 2019 (gdr)
Microsoft Sql Server 2019 For X64-based Systems (cu32)
Microsoft Sql Server 2022 (gdr)
Microsoft Sql Server 2022 For X64-based Systems (cu27)
Vendor
CVE Published:
13 October 2026

What is CVE-2026-85876?

A vulnerability in Microsoft SQL Server allows an authorized attacker to exploit a use after free condition, which can lead to local privilege escalation. This flaw may enable the attacker to gain elevated access to system resources, thereby compromising the security of the affected system.

Affected Version(s)

Microsoft SQL Server 2019 (GDR) x64-based Systems 15.0.0 < 15.0.2200.2

Microsoft SQL Server 2019 for x64-based Systems (CU32) x64-based Systems 15.0.4003.23 < 15.0.4500.2

Microsoft SQL Server 2022 (GDR) x64-based Systems 16.0.0 < 16.0.1210.3

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.