CVE-2022-24521

HIGH KEV RANSOMWARE

Windows Common Log File System Driver - Privilege Escalation

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2022-24521 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added April 13, 2022, with confirmed use in ransomware campaigns. EIP tracks 1 public exploit from researchers including uname1able.

AI-analyzed exploit summary This repository contains functional exploit code for CVE-2022-24521, a vulnerability in the Windows Common Log File System (CLFS) driver. The PoC manipulates CLFS structures to achieve arbitrary memory writes, leading to local privilege escalation (LPE) by replacing a token.

Description

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Exploits (1)

nomisec WORKING POC
by uname1able · local
https://github.com/uname1able/CVE-2022-24521

This repository contains functional exploit code for CVE-2022-24521, a vulnerability in the Windows Common Log File System (CLFS) driver. The PoC manipulates CLFS structures to achieve arbitrary memory writes, leading to local privilege escalation (LPE) by replacing a token.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Complex
Reliability
Reliable
Target: Windows 10/11 (CLFS driver)
No auth needed
Prerequisites: Local access to the system · Ability to execute arbitrary code
devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (2)

Core 2

Scores

CVSS v3 7.8
EPSS 0.0730
EPSS Percentile 93.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2022-04-13
VulnCheck KEV 2022-04-12
InTheWild.io 2022-04-12
ENISA EUVD EUVD-2022-29401
Ransomware Use Confirmed
CWE
CWE-787
Status published
Products (19)
microsoft/windows_10_1507 < 10.0.10240.19265
microsoft/windows_10_1607 < 10.0.14393.5066
microsoft/windows_10_1809 < 10.0.17763.2803
microsoft/windows_10_1909 < 10.0.18363.2212
microsoft/windows_10_20h2 < 10.0.19042.1645
microsoft/windows_10_21h1 < 10.0.19043.1645
microsoft/windows_10_21h2 < 10.0.19044.1645
microsoft/windows_11_21h2 < 10.0.22000.613
microsoft/windows_7
microsoft/windows_8.1
... and 9 more
Published Apr 15, 2022
KEV Added Apr 13, 2022
Tracked Since Feb 18, 2026