Exploitation Summary
EIP tracks 1 public exploit for CVE-2023-21766. PoCs published by Y3A.
AI-analyzed exploit summary This is a working proof-of-concept exploit for CVE-2023-21766, targeting a Windows file system driver vulnerability. The code demonstrates a race condition in the Windows Overlay Filter (WOF) driver by manipulating overlay operations via NtFsControlFile.
Description
Windows Overlay Filter Information Disclosure Vulnerability
Exploits (1)
nomisec
WORKING POC
by Y3A · poc
https://github.com/Y3A/cve-2023-21766
This is a working proof-of-concept exploit for CVE-2023-21766, targeting a Windows file system driver vulnerability. The code demonstrates a race condition in the Windows Overlay Filter (WOF) driver by manipulating overlay operations via NtFsControlFile.
Classification
Working Poc 90%
Attack Type
Lpe
Complexity
Moderate
Reliability
Racy
Target:
Microsoft Windows (WOF driver)
No auth needed
Prerequisites:
Access to a vulnerable Windows system · Ability to execute arbitrary code
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026
Full analysis →
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21766
Scores
CVSS v3
4.7
EPSS
0.0087
EPSS Percentile
54.0%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-362
CWE-591
Status
published
Products (12)
microsoft/windows_10
microsoft/windows_10
20h2
microsoft/windows_10
21h2
microsoft/windows_10
22h2
microsoft/windows_10
1607
microsoft/windows_10
1809
microsoft/windows_11
(2 CPE variants)
microsoft/windows_11
21h2 (2 CPE variants)
microsoft/windows_11
22h2 (2 CPE variants)
microsoft/windows_server_2016
... and 2 more
Published
Jan 10, 2023
Tracked Since
Feb 18, 2026