CVE-2026-96309
Awaiting Analysis
Awaiting Analysis - Queue
Use After Free in Windows Subsystem for Linux Allows Local Privilege Escalation
Vulnerability report for CVE-2026-96309, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-13
Last updated on: 2026-10-13
Assigner: Microsoft Corporation
Description
Description
Use after free in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Microsoft | Windows | 10 Version 21H2 10.0.19044.0 |
| Microsoft | Windows | 10 Version 22H2 10.0.19045.0 |
| Microsoft | Windows | 11 version 23H2 10.0.22631.0 |
| Microsoft | Windows | 11 Version 23H2 10.0.22631.0 |
| Microsoft | Windows | 11 Version 24H2 10.0.26100.0 |
| Microsoft | Windows | 11 Version 25H2 10.0.26200.0 |
| Microsoft | Windows | 11 version 26H1 10.0.28000.0 |
| Microsoft | Windows | 11 Version 26H2 10.0.26300.0 |
| Microsoft | Windows | Server 2022 10.0.20348.0 |
| Microsoft | Windows | Server 2025 10.0.26100.0 |
| Microsoft | Windows | Server 2025 (Server Core installation) 10.0.26100.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
