CVE-2024-43630

HIGH

Windows Kernel Elevation of Privilege via Stack-based Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2024-43630. PoCs published by QuasarBinary.

AI-analyzed exploit summary This repository contains a functional proof-of-concept exploit for CVE-2024-43630, a stack-based out-of-bounds write vulnerability in the Windows kernel's `NtCopyFileChunk` function. The PoC demonstrates the vulnerability by triggering a crash via an invalid event handle, affecting specific Windows 11 and Windows 10 versions.

Description

Windows Kernel Elevation of Privilege Vulnerability

Exploits (1)

nomisec WORKING POC 1 stars
by QuasarBinary · poc
https://github.com/QuasarBinary/CVE-2024-43630-POC

This repository contains a functional proof-of-concept exploit for CVE-2024-43630, a stack-based out-of-bounds write vulnerability in the Windows kernel's `NtCopyFileChunk` function. The PoC demonstrates the vulnerability by triggering a crash via an invalid event handle, affecting specific Windows 11 and Windows 10 versions.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Windows Kernel (ntoskrnl.exe) on Windows 11 24H2, Windows 10 22H2/21H2, and related server versions
No auth needed
Prerequisites: Access to a vulnerable Windows system with the affected kernel version
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 7.8
EPSS 0.0360
EPSS Percentile 88.0%
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 none
Automatable no
Technical Impact total

Details

CWE
CWE-121
Status published
Products (6)
microsoft/windows_10_21h2 < 10.0.19044.5131 (3 CPE variants)
microsoft/windows_10_22h2 < 10.0.19045.5131 (3 CPE variants)
microsoft/windows_11_24h2 < 10.0.26100.2314 (2 CPE variants)
microsoft/windows_server_2022 < 10.0.20348.2849
microsoft/windows_server_2022_23h2 < 10.0.25398.1251
microsoft/windows_server_2025 < 10.0.26100.2314
Published Nov 12, 2024
Tracked Since Feb 18, 2026