Review reviewHigh

CVE-2026-57088

Microsoft Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation)

Improper access control in Extensible Storage Engine (ESENT) allows an authorized attacker to elevate privileges locally.

PRIORITY ASSESSMENT

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.28%

Technical severityCVSS 7.8

Improper access control in Extensible Storage Engine (ESENT) allows an authorized attacker to elevate privileges locally.

Product: Microsoft Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation)
Affected versions: >= 10.0.17763.0 < 10.0.17763.9020, >= 10.0.20348.0 < 10.0.20348.5386, >= 10.0.26100.0 < 10.0.26100.33158, < 10.0.17763.9020, < 10.0.20348.5386, < 10.0.26100.33158
Fixed versions: 10.0.17763.9020, 10.0.20348.5386, 10.0.26100.33158

Confirm exposure before applying a vendor-supported change.

1
Identify
Confirm that Microsoft Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation) and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.