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CVE-2025-49721— Windows Fast FAT File System Driver Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft Windows 10 Version 1507
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 Fast Fat Driver是美国微软（Microsoft）公司的一个完整的文件系统，它解决了各种问题，例如在磁盘上存储数据、与缓存管理器交互以及处理各种 I/O 操作，例如文件创建、对文件执行读/写、设置文件信息以及对文件系统执行控制操作。 Microsoft Windows Fast Fat Driver存在安全漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Wind

CVSS 7.8 · High EPSS 0.47% · P39
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I. Basic Information for CVE-2025-49721

Vulnerability Information
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Vulnerability Title
Windows Fast FAT File System Driver Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Heap-based buffer overflow in Windows Fast FAT Driver allows an unauthorized attacker to elevate privileges locally.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows Fast Fat Driver 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Fast Fat Driver是美国微软（Microsoft）公司的一个完整的文件系统，它解决了各种问题，例如在磁盘上存储数据、与缓存管理器交互以及处理各种 I/O 操作，例如文件创建、对文件执行读/写、设置文件信息以及对文件系统执行控制操作。 Microsoft Windows Fast Fat Driver存在安全漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Wind
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 10 Version 1507 10.0.10240.0 ~ 10.0.10240.21073 -
Microsoft Windows 10 Version 1607 10.0.14393.0 ~ 10.0.14393.8246 -
Microsoft Windows 10 Version 1809 10.0.17763.0 ~ 10.0.17763.7558 -
Microsoft Windows 10 Version 21H2 10.0.19044.0 ~ 10.0.19044.6093 -
Microsoft Windows 10 Version 22H2 10.0.19045.0 ~ 10.0.19045.6093 -
Microsoft Windows 11 version 22H2 10.0.22621.0 ~ 10.0.22621.5624 -
Microsoft Windows 11 version 22H3 10.0.22631.0 ~ 10.0.22631.5624 -
Microsoft Windows 11 Version 23H2 10.0.22631.0 ~ 10.0.22631.5624 -
Microsoft Windows 11 Version 24H2 10.0.26100.0 ~ 10.0.26100.4652 -
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 ~ 6.1.7601.27820 -
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 ~ 6.1.7601.27820 -
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 ~ 6.0.6003.23418 -
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 ~ 6.0.6003.23418 -
Microsoft Windows Server 2012 6.2.9200.0 ~ 6.2.9200.25573 -
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 ~ 6.2.9200.25573 -
Microsoft Windows Server 2012 R2 6.3.9600.0 ~ 6.3.9600.22676 -
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 ~ 6.3.9600.22676 -
Microsoft Windows Server 2016 10.0.14393.0 ~ 10.0.14393.8246 -
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 ~ 10.0.14393.8246 -
Microsoft Windows Server 2019 10.0.17763.0 ~ 10.0.17763.7558 -
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 ~ 10.0.17763.7558 -
Microsoft Windows Server 2022 10.0.20348.0 ~ 10.0.20348.3932 -
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 ~ 10.0.25398.1732 -
Microsoft Windows Server 2025 10.0.26100.0 ~ 10.0.26100.4652 -
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 ~ 10.0.26100.4652 -

II. Public POCs for CVE-2025-49721

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III. Intelligence Information for CVE-2025-49721

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Same Patch Batch · Microsoft · 2025-07-08 · 129 CVEs total

CVE-2025-47981 9.8 CRITICAL SPNEGO Extended Negotiation (NEGOEX) Security Mechanism Remote Code Execution Vulnerabilit
CVE-2025-48817 8.8 HIGH Remote Desktop Client Remote Code Execution Vulnerability
CVE-2025-49723 8.8 HIGH Windows StateRepository API Server file Tampering Vulnerability
CVE-2025-49701 8.8 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2025-49688 8.8 HIGH Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2025-49687 8.8 HIGH Windows Input Method Editor (IME) Elevation of Privilege Vulnerability
CVE-2025-49704 8.8 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2025-49753 8.8 HIGH Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2025-49676 8.8 HIGH Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2025-49674 8.8 HIGH Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2025-49672 8.8 HIGH Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2025-49673 8.8 HIGH Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2025-48824 8.8 HIGH Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2025-49657 8.8 HIGH Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2025-49739 8.8 HIGH Visual Studio Elevation of Privilege Vulnerability
CVE-2025-49740 8.8 HIGH Windows SmartScreen Security Feature Bypass Vulnerability
CVE-2025-49663 8.8 HIGH Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2025-47998 8.8 HIGH Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
CVE-2025-47986 8.8 HIGH Universal Print Management Service Elevation of Privilege Vulnerability
CVE-2025-49724 8.8 HIGH Windows Connected Devices Platform Service Remote Code Execution Vulnerability

Showing top 20 of 129 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Windows 10 Version 1507
Same vendor: Microsoft
Same weakness: CWE-122

V. Comments for CVE-2025-49721

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