CVE-2026-40369
Windows Kernel Elevation of Privilege Vulnerability
Description
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
INFO
Published Date :
May 12, 2026, 6:17 p.m.
Last Modified :
June 1, 2026, 7:16 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-40369
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | f38d906d-7342-40ea-92c1-6c4a2c6478c8 | ||||
| CVSS 3.1 | HIGH | [email protected] |
Public PoC/Exploit Available at Github
CVE-2026-40369 has a 13 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-40369.
| URL | Resource |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40369 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-40369 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-40369
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
CVE-2026-40369
C++ C
Game Security Resources
poc & exp for CVE_2026_40369
CMake C++
eprocess offset puller for relevant member offsets and function addresses for cve-2026-40369
Python
None
Full exploit code for CVE-2026-40369 - A Windows kernel arbitrary write vulnerability that allows browser sandbox escape from all browsers render process sandbox
C++ C
Tracking Vulnerabilities That Appear to be Credited to the Anthropic Research Team
Cathedral-Grade Security for AI Agents. Attack vectors updated daily. Local-first, zero API cost. MIT licensed.
Python
收集各种有趣的github项目
C C++ PowerShell Python Shell
A collection of Vulnerability Research and Reverse Engineering writeups.
awesome game security [Welcome to PR]
game awesome cheat anticheat windows debug antidebug engine security anti driver kernel hack gamehack system android game-development blockchain ethereum
Python
TOP All bugbounty pentesting CVE-2023- POC Exp RCE example payload Things
bugbounty cve exp exploit payload poc rce vulnerability
Shell
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
security cve exploit poc vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-40369 vulnerability anywhere in the article.
-
CybersecurityNews
CISA Warns of LiteSpeed cPanel Plugin Vulnerability Exploited in Attacks
CISA has issued an urgent warning regarding a critical vulnerability in the LiteSpeed cPanel Plugin, identified as CVE-2026-48172, which is currently being exploited in real-world attacks. The flaw en ... Read more
-
CybersecurityNews
GitHub Enterprise Server 3.20.3 Released With Fox for Critical Vulnerabilities
GitHub has shipped GitHub Enterprise Server (GHES) 3.20.3 as a security‑driven patch release that fixes multiple critical and high‑severity vulnerabilities and rotates the signing key used to validate ... Read more
-
CybersecurityNews
Windows Kernel Vulnerability Allows Attackers to Modify Kernel Memory Counters
A critical Windows kernel vulnerability, tracked as CVE-2026-40369, has been disclosed, enabling attackers to achieve full SYSTEM-level privilege escalation even from the most restricted environments, ... Read more
The following table lists the changes that have been made to the
CVE-2026-40369 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Jun. 01, 2026
Action Type Old Value New Value Changed Description Untrusted pointer dereference in Windows Kernel allows an authorized attacker to elevate privileges locally. Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally. -
Initial Analysis by [email protected]
May. 14, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:* versions up to (excluding) 10.0.28000.2113 *cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.28000.2113 *cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* versions up to (excluding) 10.0.26100.8390 *cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.26100.8390 *cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:* versions up to (excluding) 10.0.26200.8390 *cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.26200.8390 *cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.26100.32772 Added Reference Type Microsoft Corporation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40369 Types: Vendor Advisory -
New CVE Received by [email protected]
May. 12, 2026
Action Type Old Value New Value Added Description Untrusted pointer dereference in Windows Kernel allows an authorized attacker to elevate privileges locally. Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-822 Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40369