Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2021-36955— Windows Common Log File System Driver Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft Windows 10 Version 1507
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Windows Common Log File System Driver是美国微软（Microsoft）公司的通用日志文件系统 (CLFS) API 提供了一个高性能、通用的日志文件子系统，专用客户端应用程序可以使用该子系统并且多个客户端可以共享以优化日志访问。 microsoft Windows Common Log File System Driver存在权限许可和访问控制问题漏洞。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Sy

CVSS 7.8 · High KEV · Ransomware EPSS 4.04% · P90

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 26

VendorProduct Version RangeStatus
Microsoft Windows 10 Version 1507 10.0.10240.0< 10.0.10240.19060 affected
Microsoft Windows 10 Version 1607 10.0.14393.0< 10.0.14393.4651 affected
Microsoft Windows 10 Version 1809 10.0.17763.0< 10.0.17763.2183 affected
10.0.0< 10.0.17763.2183 affected
Microsoft Windows 10 Version 1909 10.0.0< 10.0.18363.1801 affected
Microsoft Windows 10 Version 2004 10.0.0< 10.0.19041.1237 affected
Microsoft Windows 10 Version 20H2 10.0.0< 10.0.19042.1237 affected
Microsoft Windows 10 Version 21H1 10.0.0< 10.0.19043.1237 affected
Microsoft Windows 7 6.1.0< 6.1.7601.25712 affected
Microsoft Windows 7 Service Pack 1 6.1.0< 6.1.7601.25712 affected
Microsoft Windows 8.1 6.3.0< 6.3.9600.20120 affected
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0< 6.1.7601.25712 affected
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0< 6.1.7601.25712 affected
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0< 6.0.6003.21218 affected
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0< 6.0.6003.21218 affected
Microsoft Windows Server 2012 6.2.9200.0< 6.2.9200.23462 affected
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0< 6.2.9200.23462 affected
Microsoft Windows Server 2012 R2 6.3.9600.0< 6.3.9600.20120 affected
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0< 6.3.9600.20120 affected
Microsoft Windows Server 2016 10.0.14393.0< 10.0.14393.4651 affected
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0< 10.0.14393.4651 affected
Microsoft Windows Server 2019 10.0.17763.0< 10.0.17763.2183 affected
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0< 10.0.17763.2183 affected
Microsoft Windows Server 2022 10.0.20348.0< 10.0.20348.230 affected
Microsoft Windows Server version 2004 10.0.0< 10.0.19041.1237 affected
Microsoft Windows Server version 20H2 10.0.0< 10.0.19042.1237 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-36955

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Windows Common Log File System Driver Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Windows Common Log File System Driver Elevation of Privilege Vulnerability
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
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows Common Log File System Driver 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Common Log File System Driver是美国微软（Microsoft）公司的通用日志文件系统 (CLFS) API 提供了一个高性能、通用的日志文件子系统，专用客户端应用程序可以使用该子系统并且多个客户端可以共享以优化日志访问。 microsoft Windows Common Log File System Driver存在权限许可和访问控制问题漏洞。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Sy
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)

Shenlong Deep Dive — AI Deep Analysis

10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.

Read summary Full analysis (login)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Windows 10 Version 1507 10.0.10240.0 ~ 10.0.10240.19060 -
Microsoft Windows 10 Version 1607 10.0.14393.0 ~ 10.0.14393.4651 -
Microsoft Windows 10 Version 1809 10.0.17763.0 ~ 10.0.17763.2183 -
Microsoft Windows 10 Version 1809 10.0.0 ~ 10.0.17763.2183 -
Microsoft Windows 10 Version 1909 10.0.0 ~ 10.0.18363.1801 -
Microsoft Windows 10 Version 2004 10.0.0 ~ 10.0.19041.1237 -
Microsoft Windows 10 Version 20H2 10.0.0 ~ 10.0.19042.1237 -
Microsoft Windows 10 Version 21H1 10.0.0 ~ 10.0.19043.1237 -
Microsoft Windows 7 6.1.0 ~ 6.1.7601.25712 -
Microsoft Windows 7 Service Pack 1 6.1.0 ~ 6.1.7601.25712 -
Microsoft Windows 8.1 6.3.0 ~ 6.3.9600.20120 -
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 ~ 6.1.7601.25712 -
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 ~ 6.1.7601.25712 -
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 ~ 6.0.6003.21218 -
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 ~ 6.0.6003.21218 -
Microsoft Windows Server 2012 6.2.9200.0 ~ 6.2.9200.23462 -
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 ~ 6.2.9200.23462 -
Microsoft Windows Server 2012 R2 6.3.9600.0 ~ 6.3.9600.20120 -
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 ~ 6.3.9600.20120 -
Microsoft Windows Server 2016 10.0.14393.0 ~ 10.0.14393.4651 -
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 ~ 10.0.14393.4651 -
Microsoft Windows Server 2019 10.0.17763.0 ~ 10.0.17763.2183 -
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 ~ 10.0.17763.2183 -
Microsoft Windows Server 2022 10.0.20348.0 ~ 10.0.20348.230 -
Microsoft Windows Server version 2004 10.0.0 ~ 10.0.19041.1237 -
Microsoft Windows Server version 20H2 10.0.0 ~ 10.0.19042.1237 -

II. Public POCs for CVE-2021-36955

# POC Description Source Link Shenlong Link
1 CVE-2021-36955 https://github.com/JiaJinRong12138/CVE-2021-36955-EXP POC Details
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-36955

请登录查看更多情报信息。

Vendor Advisories for CVE-2021-36955 (2)

Same Patch Batch · Microsoft · 2021-09-15 · 61 CVEs total

CVE-2021-38647 9.8 CRITICAL Open Management Infrastructure (OMI) Remote Code Execution Vulnerability
CVE-2021-36954 8.8 HIGH Windows Bind Filter Driver Elevation of Privilege Vulnerability
CVE-2021-40444 8.8 HIGH Microsoft MSHTML Remote Code Execution Vulnerability
CVE-2021-36965 8.8 HIGH Windows WLAN AutoConfig Service Remote Code Execution Vulnerability
CVE-2021-26435 8.1 HIGH Windows Scripting Engine Memory Corruption Vulnerability
CVE-2021-36967 8.0 HIGH Windows WLAN AutoConfig Service Elevation of Privilege Vulnerability
CVE-2021-38644 7.8 HIGH Microsoft MPEG-2 Video Extension Remote Code Execution Vulnerability
CVE-2021-38626 7.8 HIGH Windows Kernel Elevation of Privilege Vulnerability
CVE-2021-38648 7.8 HIGH Open Management Infrastructure Elevation of Privilege Vulnerability
CVE-2021-38653 7.8 HIGH Microsoft Office Visio Remote Code Execution Vulnerability
CVE-2021-38654 7.8 HIGH Microsoft Office Visio Remote Code Execution Vulnerability
CVE-2021-38646 7.8 HIGH Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability
CVE-2021-38656 7.8 HIGH Microsoft Word Remote Code Execution Vulnerability
CVE-2021-38658 7.8 HIGH Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2021-38659 7.8 HIGH Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2021-38633 7.8 HIGH Windows Common Log File System Driver Elevation of Privilege Vulnerability
CVE-2021-38660 7.8 HIGH Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2021-38630 7.8 HIGH Windows Event Tracing Elevation of Privilege Vulnerability
CVE-2021-38628 7.8 HIGH Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
CVE-2021-38655 7.8 HIGH Microsoft Excel Remote Code Execution Vulnerability

Showing top 20 of 61 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Windows 10 Version 1507
Same vendor: Microsoft

V. Comments for CVE-2021-36955

No comments yet

Leave a comment