CVE-2026-96309(microsoft / windows_10_21h2)

LOWCVSS 7.8 · HIGH

Immediate actions

Recommended action window: Monitor and triage in normal cycle

NVD description

Use after free in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.

0.5/ 10 priority

Patch / fix

Weakness type (CWE)

CWE-416

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

If you run products in this scope, you should treat this CVE as relevant to your environment.

Vendors

Products

windows_10_21h2windows_10_22h2windows_11_23h2windows_11_24h2windows_11_25h2windows_11_26h1windows_11_26h2windows_server_2022windows_server_2025

Full discourse1 post

VulniPulse@vulnipulse1d
CVE advisory: CVE-2026-96309 - microsoft: Windows Subsystem for Linux Elevation of Privilege Vulnerability. https://vulnipulse.com/advisories/microsoft-cve-2026-96309 #CVE #CyberSecurity #Microsoft #WindowsServer
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CPE platform detail18 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

18 of 18 entries

Part	Vendor	Product	Version	Target SW	Target HW
OS	microsoft	windows_10_21h2	-	-	arm64
OS	microsoft	windows_10_21h2	-	-	x64
OS	microsoft	windows_10_21h2	-	-	x86
OS	microsoft	windows_10_22h2	-	-	arm64
OS	microsoft	windows_10_22h2	-	-	x64
OS	microsoft	windows_10_22h2	-	-	x86
OS	microsoft	windows_11_23h2	-	-	arm64
OS	microsoft	windows_11_23h2	-	-	x64
OS	microsoft	windows_11_24h2	-	-	arm64
OS	microsoft	windows_11_24h2	-	-	x64
OS	microsoft	windows_11_25h2	-	-	arm64
OS	microsoft	windows_11_25h2	-	-	x64
OS	microsoft	windows_11_26h1	-	-	arm64
OS	microsoft	windows_11_26h1	-	-	x64
OS	microsoft	windows_11_26h2	-	-	arm64
OS	microsoft	windows_11_26h2	-	-	x64
OS	microsoft	windows_server_2022	-	-	-
OS	microsoft	windows_server_2025	-	-	x64