High7.8Microsoft Server

High [CVE-2026-61359] Windows Storage Elevation of Privilege Vulnerability

This high-severity Microsoft Server advisory covers CVE-2026-61359 affecting Windows Server 2022, Windows Server 2025 (Server Core installation).

CVE-2026-61359 Published Aug 11, 2026Updated by vendor Aug 11, 2026

CVE-2026-61359

Affected products & platforms

Microsoft ServerWindows Server

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Summary

Heap-based buffer overflow in Windows Storage allows an authorized attacker to elevate privileges locally.

Affected products named by the advisory: Windows Server 2022; Windows Server 2025; Windows Server 2025 (Server Core installation).

Affected versions

Windows 11 version 23H2 10.0.22631.0 before 10.0.22631.7517
Windows 11 Version 23H2 10.0.22631.0 before 10.0.22631.7517
Windows 11 Version 24H2 10.0.26100.0 before 10.0.26100.9168
Windows 11 Version 25H2 10.0.26200.0 before 10.0.26200.9168
Windows 11 version 26H1 10.0.28000.0 before 10.0.28000.2704
Windows Server 2022 10.0.20348.0 before 10.0.20348.5499
Windows Server 2025 10.0.26100.0 before 10.0.26100.33296
Windows Server 2025 (Server Core installation) 10.0.26100.0 before 10.0.26100.33296

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Fixed versions

10.0.22631.7517
10.0.26100.9168
10.0.26200.9168
10.0.28000.2704
10.0.20348.5499
10.0.26100.33296

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Mitigation

Upgrade to a fixed release: 10.0.22631.7517, 10.0.26100.9168, 10.0.26200.9168, 10.0.28000.2704, 10.0.20348.5499, 10.0.26100.33296. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

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