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CVE-2026-41089

CRITICAL
9.8NVD

Summary

generated automatically from NVD data

CVE-2026-41089 is a stack-based buffer overflow (CWE-121) in Windows Netlogon that lets an unauthorized attacker execute code over a network. The affected products are Microsoft Windows Server 2012, 2016, 2019, 2022, 2022 23H2 and 2025, with NVD version bounds such as 10.0.14393.9140 for Server 2016 and 10.0.26100.32772 for Server 2025. It is rated CRITICAL with a CVSS v3.1 score of 9.8, reflecting network attack, low complexity, and no privileges or user interaction required.

NVD description

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

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EPSS · FIRST.org

0.97%probability of exploitation in the next 30 days

Higher than 61% of scored CVEs

EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-16, recomputed daily by FIRST.org.

In-depth analysis on cveo.tech

We've published a detailed analysis of this CVE — exploitation, IOCs and mitigation.

CVSS v3.1 Score

9.8
/ 10.0
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Information

Published
12 mai 2026
Updated
17 juin 2026
Status
Analyzed
Source
secure@microsoft.com

Affected products

microsoft windows server 2012
Versions : r2
microsoft windows server 2016
Versions : 10.0.14393.9140
microsoft windows server 2019All Windows Server CVEs →
Versions : 10.0.17763.8755
microsoft windows server 2022All Windows Server CVEs →
Versions : 10.0.20348.5074
microsoft windows server 2022 23h2
Versions : 10.0.25398.2330
microsoft windows server 2025
Versions : 10.0.26100.32772

Weaknesses (CWE)

CWE-121

References (1)

Similar CVEs

Other vulnerabilities of type CWE-121

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