Exploitation Summary
EIP tracks 1 public exploit for CVE-2021-43217. PoCs published by JolynNgSC.
AI-analyzed exploit summary This repository is a writeup documenting an EFS bypass vulnerability (CVE-2021-43217) on Windows 10, demonstrating the use of Kali Linux and Metasploit for exploitation. It includes steps for simulation but lacks actual exploit code.
Description
Windows Encrypting File System (EFS) Remote Code Execution Vulnerability
Exploits (1)
nomisec
WRITEUP
by JolynNgSC · poc
https://github.com/JolynNgSC/EFS_CVE-2021-43217
This repository is a writeup documenting an EFS bypass vulnerability (CVE-2021-43217) on Windows 10, demonstrating the use of Kali Linux and Metasploit for exploitation. It includes steps for simulation but lacks actual exploit code.
Classification
Writeup 90%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target:
Windows 10 EFS
No auth needed
Prerequisites:
Access to a Windows 10 system with EFS enabled · Kali Linux environment
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026
Full analysis →
References (1)
Core 1
Core References
Patch, Vendor Advisory x_refsource_misc
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43217
Scores
CVSS v3
8.1
EPSS
0.0642
EPSS Percentile
92.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
Status
published
Products (20)
microsoft/windows_10
microsoft/windows_10
20h2
microsoft/windows_10
21h1
microsoft/windows_10
1607
microsoft/windows_10
1809
microsoft/windows_10
1909
microsoft/windows_10
2004
microsoft/windows_11
microsoft/windows_7
microsoft/windows_8.1
... and 10 more
Published
Dec 15, 2021
Tracked Since
Feb 18, 2026