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9.8
CRITICAL CVSS 3.1
CVE-2026-41089
Windows Netlogon Remote Code Execution Vulnerability
Overview
Description

Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network.

Details
INFO

Published Date :

May 12, 2026, 6:17 p.m.

Last Modified :

May 15, 2026, 3:42 p.m.

Remotely Exploit :

No

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2026-41089 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.

ID Vendor Product Action
1 Microsoft windows_server_2012
2 Microsoft windows_server_2016
3 Microsoft windows_server_2019
4 Microsoft windows_server_2022
5 Microsoft windows_server_2022_23h2
6 Microsoft windows_server_23h2
7 Microsoft windows_server_2012_r2
8 Microsoft windows_server_2025
: Total Affected Vendor : 1 | Products : 8
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 CRITICAL f38d906d-7342-40ea-92c1-6c4a2c6478c8
CVSS 3.1 CRITICAL [email protected]
Public PoC/Exploit Available at Github

CVE-2026-41089 has a 37 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References
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-2026-41089.

URL Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41089 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-2026-41089 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-2026-41089 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).

Profile Photo
muhammad-irfan08/muhammad-irfan08

None

Updated: 1 week, 2 days ago
0 stars 0 fork 0 watcher
Born at : June 12, 2026, 10:34 a.m. This repo has been linked 11 different CVEs too.
Profile Photo
Coasttruvitalize/CVE-2026-41089-latest

CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)

buffer-overflow cldap cve cve-2026-41089 exploit poc vulnerability vulnerability-detection windows windows-server

Python

Updated: 1 week, 5 days ago
0 stars 0 fork 0 watcher
Born at : June 9, 2026, 3:31 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
SpiralSealFill/CVE-2026-41089-hub

CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)

buffer-overflow cldap cve cve-2026-41089 exploit poc vulnerability vulnerability-detection windows windows-server

Python

Updated: 1 week, 5 days ago
0 stars 0 fork 0 watcher
Born at : June 9, 2026, 2:14 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
jenniferreire26/CVE-2026-41089

None

Updated: 1 week, 5 days ago
0 stars 0 fork 0 watcher
Born at : June 9, 2026, 11:16 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
RoyalViceroyBear/CVE-2026-41089-706

CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)

buffer-overflow cldap cve cve-2026-41089 exploit poc vulnerability vulnerability-detection windows windows-server

Python

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : June 6, 2026, 3:47 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
CrimsonKingfisher/CVE-2026-41089-245

CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)

buffer-overflow cldap cve cve-2026-41089 exploit poc vulnerability vulnerability-detection windows windows-server

Python

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : June 6, 2026, 3:39 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
Powderbatpatch/CVE-2026-41089-397

CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)

buffer-overflow cldap cve cve-2026-41089 exploit poc vulnerability vulnerability-detection windows windows-server

Python

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : June 6, 2026, 3:37 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
StampDreamFitting/CVE-2026-41089-986

CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)

buffer-overflow cldap cve cve-2026-41089 exploit poc vulnerability vulnerability-detection windows windows-server

Python

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : June 6, 2026, 2:17 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
segmentjoninsecret/CVE-2026-41089-334

CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)

buffer-overflow cldap cve cve-2026-41089 exploit poc vulnerability vulnerability-detection windows windows-server

Python

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : June 6, 2026, 2:02 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
raingatorrouter/CVE-2026-41089-224

CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)

buffer-overflow cldap cve cve-2026-41089 exploit poc vulnerability vulnerability-detection windows windows-server

Python

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : June 6, 2026, 1:42 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
raingatorrouter/CVE-2026-41089-953

CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)

buffer-overflow cldap cve cve-2026-41089 exploit poc vulnerability vulnerability-detection windows windows-server

Python

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : June 6, 2026, 1:29 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
SightFinchFall/CVE-2026-41089-238

CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)

buffer-overflow cldap cve cve-2026-41089 exploit poc vulnerability vulnerability-detection windows windows-server

Python

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : June 6, 2026, 1:21 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
sectiondukestring25/CVE-2026-41089-971

CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)

buffer-overflow cldap cve cve-2026-41089 exploit poc vulnerability vulnerability-detection windows windows-server

Python

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : June 6, 2026, 12:11 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
Mapclaregister/CVE-2026-41089-191

CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)

buffer-overflow cldap cve cve-2026-41089 exploit poc vulnerability vulnerability-detection windows windows-server

Python

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : June 6, 2026, 11:59 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
Fuchsiafromcurl/CVE-2026-41089-274

CVE-2026-41089 PoC — Netlogon CLDAP stack buffer overflow (CVSS 9.8 CRITICAL)

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : June 6, 2026, 10:46 a.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-41089 vulnerability anywhere in the article.

  • The Cyber Express
The Cyber Express Weekly Roundup: Cloud Extortion, Long-Term Espionage, Android Zero-Days, and Public Sector Security Reviews

The cybersecurity landscape in this weekly roundup continues to show a clear shift toward identity-driven attacks, long-term persistence operations, and exploitation of trusted cloud environments. Thr ... Read more

Published Date: Jun 05, 2026 (2 weeks, 2 days ago)
  • The Cyber Express
AI-Powered Bots Are Blurring the Line Between Users and Cyber Threats

For years, security teams have relied on behavioral clues to identify malicious activity. However, the rise of AI-powered bots is making that task far more challenging. Unlike traditional automated to ... Read more

Published Date: Jun 04, 2026 (2 weeks, 3 days ago)
  • security.nl
Belgische overheid waarschuwt voor misbruik van kritiek Windows-lek

Aanvallers maken actief misbruik van een kritieke kwetsbaarheid in Windows die remote code execution mogelijk maakt. Daarvoor waarschuwt de Belgische overheid. Op 12 mei kwam Microsoft met beveiliging ... Read more

Published Date: Jun 01, 2026 (2 weeks, 6 days ago)
  • CybersecurityNews
Windows Netlogon 0-Click RCE Vulnerability Now Actively Exploited In The Wild

The critical Windows Netlogon remote code execution (RCE) vulnerability tracked as CVE-2026-41089 is now under active exploitation in the wild, significantly raising the risk profile for unpatched Win ... Read more

Published Date: Jun 01, 2026 (3 weeks ago)
  • 0patch.com
Micropatches released for Windows Netlogon Remote Code Execution Vulnerability (CVE-2026-41089)

May 2026 Windows Updates brought a patch for CVE-2026-41089, a remotely exploitable issue on Windows Server acting as a domain controller. Under certain conditions, an unauthenticated attacker in loca ... Read more

Published Date: May 26, 2026 (3 weeks, 5 days ago)
  • security.nl
Kritiek beveiligingslek in Windows Server maakt computerworm mogelijk

Een kritieke kwetsbaarheid in Windows Server maakt het mogelijk voor een computerworm om zich zonder interactie van gebruikers te verspreiden. Twee andere kwetsbaarheden in Windows zijn ook zonder geb ... Read more

Published Date: May 13, 2026 (1 month, 1 week ago)
  • CrowdStrike.com
May 2026 Patch Tuesday: 30 Critical Vulnerabilities Among 130 CVEs

Microsoft has addressed 130 vulnerabilities in its May 2026 security update release, fewer than April’s 164 vulnerabilities. This month's patches include fixes for 30 Critical vulnerabilities, along w ... Read more

Published Date: May 13, 2026 (1 month, 1 week ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-41089 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.

  • Initial Analysis by [email protected]

    May. 15, 2026

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.14393.9140 *cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.17763.8755 *cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.25398.2330 *cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.26100.32772 *cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.20348.5074
    Added Reference Type Microsoft Corporation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41089 Types: Vendor Advisory
  • New CVE Received by [email protected]

    May. 12, 2026

    Action Type Old Value New Value
    Added Description Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-121
    Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41089
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 9.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact