What is CVE-2026-57088?

CVE-2026-57088 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Extensible Storage Engine (ESENT) Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-57088 cover?

CVE-2026-57088 covers the following CVE IDs: CVE-2026-57088. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-57088?

CVE-2026-57088 has a CVSS v3 base score of 7.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-57088?

CVE-2026-57088 affects 7 products, including: Windows 10 Version 1809 for 32-bit Systems; Windows 10 Version 1809 for x64-based Systems; Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server 2022; and others — see the full list on the advisory page.

CVE-2026-57088HighCVSS 7.8

Extensible Storage Engine (ESENT) Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

July 17, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-57088 →

📋 Description

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

🎯 Affected products7

Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for x64-based Systems
Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server 2022
Windows Server 2025
Windows Server 2025 (Server Core installation)

✅ Remediation

KB5099538 (Security Update) — fixed build 10.0.17763.9020 KB5099540 (Security Update) — fixed build 10.0.20348.5386 KB5099536 (Security Update) — fixed build 10.0.26100.33158

🔗 References (7)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57088
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5099538
referencehttps://support.microsoft.com/help/5099538
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5099540
referencehttps://support.microsoft.com/help/5099540
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5099536
referencehttps://support.microsoft.com/help/5099536