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CVE-2026-57968— Windows Subsystem for Linux (WSL2) Kernel Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft Windows Subsystem for Linux (WSL2)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Windows Subsystem for Linux是美国Microsoft公司的一个Windows下的Linux子系统,一个能够运行原生Linux二进制可执行文件(ELF格式)的兼容层。 Microsoft Windows Subsystem for Linux 2.7.8之前版本存在缓冲区错误漏洞，该漏洞源于缓冲区过度读取，可能导致授权攻击者本地提升权限。

CVSS 7.8 · High EPSS 0.33% · P24

Affected Version Matrix 1

VendorProduct Version RangeStatus
Microsoft Windows Subsystem for Linux (WSL2) 5.0.0.0< 2.7.8 affected
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I. Basic Information for CVE-2026-57968

Vulnerability Information
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Vulnerability Title
Windows Subsystem for Linux (WSL2) Kernel Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Buffer over-read in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区上溢读取
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows Subsystem for Linux 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Subsystem for Linux是美国Microsoft公司的一个Windows下的Linux子系统,一个能够运行原生Linux二进制可执行文件(ELF格式)的兼容层。 Microsoft Windows Subsystem for Linux 2.7.8之前版本存在缓冲区错误漏洞，该漏洞源于缓冲区过度读取，可能导致授权攻击者本地提升权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Windows Subsystem for Linux (WSL2) 5.0.0.0 ~ 2.7.8 -

II. Public POCs for CVE-2026-57968

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III. Intelligence Information for CVE-2026-57968

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Vendor Advisories for CVE-2026-57968 (1)

Same Patch Batch · Microsoft · 2026-07-14 · 570 CVEs total

CVE-2026-57092 9.9 CRITICAL Microsoft Windows VMSwitch Elevation of Privilege Vulnerability
CVE-2026-56190 9.8 CRITICAL Remote Desktop Protocol Remote Code Execution Vulnerability
CVE-2026-50518 9.8 CRITICAL Windows DHCP Server Remote Code Execution Vulnerability
CVE-2026-56159 9.8 CRITICAL DHCP Server Service Remote Code Execution Vulnerability
CVE-2026-42990 9.8 CRITICAL SQL Server ODBC driver Elevation of Privilege Vulnerability
CVE-2026-55944 9.8 CRITICAL Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Co
CVE-2026-54118 9.8 CRITICAL Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2026-56188 9.8 CRITICAL Windows Server Network driver Remote Code Execution Vulnerability
CVE-2026-54117 9.8 CRITICAL Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2026-58644 9.8 CRITICAL Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2026-50522 9.8 CRITICAL Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2026-54990 9.8 CRITICAL Remote Desktop Client Remote Code Execution Vulnerability
CVE-2026-50447 9.8 CRITICAL Windows Message Queuing Service (MSMQ) Remote Code Execution Vulnerability
CVE-2026-55010 9.8 CRITICAL Minecraft Bedrock Dedicated Server Remote Code Execution Vulnerability
CVE-2026-49172 9.8 CRITICAL Windows FTP Service Remote Code Execution Vulnerability
CVE-2026-48561 9.6 CRITICAL Microsoft Edge Copilot Remote Code Execution Vulnerability
CVE-2026-50380 9.6 CRITICAL Windows GDI+ Remote Code Execution Vulnerability
CVE-2026-55008 9.6 CRITICAL Microsoft Exchange Server Spoofing Vulnerability
CVE-2026-49798 9.3 CRITICAL Windows Kernel Elevation of Privilege Vulnerability
CVE-2026-55040 9.1 CRITICAL Microsoft SharePoint Server Security Feature Bypass Vulnerability

Showing top 20 of 570 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Windows Subsystem for Linux (WSL2)
Same vendor: Microsoft
Same weakness: CWE-126

V. Comments for CVE-2026-57968

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