CVE-2026-41089

critical

Description

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

References

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

https://www.securityweek.com/critical-windows-netlogon-vulnerability-in-attackers-crosshairs/

https://www.helpnetsecurity.com/2026/06/01/windows-netlogon-rce-exploited-cve-2026-41089/

https://www.bleepingcomputer.com/news/microsoft/critical-windows-netlogon-remote-code-execution-flaw-now-exploited-in-attacks/

https://www.infosecurity-magazine.com/news/microsoft-17-critical-flaws-may/

https://thehackernews.com/2026/05/microsoft-patches-138-vulnerabilities.html

https://securityaffairs.com/192086/uncategorized/microsoft-patch-tuesday-for-may-2026-fix-138-bugs-some-of-them-are-alarming.html

https://www.theregister.com/patches/2026/05/13/doozy-of-a-patch-tuesday-includes-30-critical-microsoft-cves/5239224

https://cyberscoop.com/microsoft-patch-tuesday-may-2026/

https://www.tenable.com/blog/microsofts-may-2026-patch-tuesday-addresses-118-cves-cve-2026-41103

Details

Source: Mitre, NVD

Published: 2026-05-12

Updated: 2026-05-15

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.72253

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability of Interest