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CVE-2024-43630 is an elevation of privilege vulnerability in the Windows kernel. It was addressed by Microsoft in the November 2024 Patch Tuesday release and classified as Important. Publicly available information in the provided material identifies the affected component only at the Windows kernel level and does not disclose the specific vulnerable function, root cause, or exploitation primitive. Microsoft assessed the vulnerability as more likely to be exploited within 30 days of release.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository is a proof-of-concept (POC) exploit for CVE-2024-43630, a stack-based out-of-bounds write vulnerability in the Windows kernel function NtCopyFileChunk. The repository contains a Visual Studio C++ project with a single main exploit file (CVE-2024-43630-POC.cpp). The exploit works by creating/opening two files (source.txt and dest.txt) in the current directory, writing data, and then calling the NtCopyFileChunk syscall with crafted parameters to trigger the stack OOB write. The README provides a detailed technical analysis of the vulnerability, affected Windows versions, and kernel internals. The exploit as provided results in a system crash (BSOD) and does not achieve privilege escalation or code execution. The attack vector is local, requiring the attacker to execute code on the target system. The only fingerprintable endpoints are the file names used in the exploit. The code is a POC and demonstrates the vulnerability for research and testing purposes.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Windows Kernel elevation of privilege vulnerability that Microsoft assesses as more likely to be exploited within 30 days.
Windows Kernel elevation of privilege vulnerability.
An elevation of privilege vulnerability in the Windows Kernel.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.