CVE-2026-41089

criticalpriority · track · 38EPSS 0.796 · 100 %ileexploit · PoCDEEUNLRUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

8 exploits · PoC

Likely / severe?

79.6% (100th) EPSS

CVSS 9.8 · critical

Is it mine?

119 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedWindows Server 2012msrc_csaf
6.2.9200.26079:Monthly Rollup:https://support.microsoft.com/help/5087470
https://support.microsoft.com/help/5087470
FixedWindows Server 2012 (Server Core installation)msrc_csaf
6.2.9200.26079:Monthly Rollup:https://support.microsoft.com/help/5087470
https://support.microsoft.com/help/5087470
FixedWindows Server 2012 R2msrc_csaf
6.3.9600.23181:Monthly Rollup:https://support.microsoft.com/help/5087471
https://support.microsoft.com/help/5087471
FixedWindows Server 2012 R2 (Server Core installation)msrc_csaf
6.3.9600.23181:Monthly Rollup:https://support.microsoft.com/help/5087471
https://support.microsoft.com/help/5087471
FixedWindows Server 2016msrc_csaf
10.0.14393.9140:Security Update:https://support.microsoft.com/help/5087537
https://support.microsoft.com/help/5087537
FixedWindows Server 2016 (Server Core installation)msrc_csaf
10.0.14393.9140:Security Update:https://support.microsoft.com/help/5087537
https://support.microsoft.com/help/5087537
FixedWindows Server 2019msrc_csaf
10.0.17763.8755:Security Update:https://support.microsoft.com/help/5087538
https://support.microsoft.com/help/5087538
FixedWindows Server 2019 (Server Core installation)msrc_csaf
10.0.17763.8755:Security Update:https://support.microsoft.com/help/5087538
https://support.microsoft.com/help/5087538
FixedWindows Server 2022msrc_csaf
10.0.20348.5074:Security Hotpatch Update:https://support.microsoft.com/help/5087424
https://support.microsoft.com/help/5087424
FixedWindows Server 2022 (Server Core installation)msrc_csaf
10.0.20348.5074:Security Hotpatch Update:https://support.microsoft.com/help/5087424
https://support.microsoft.com/help/5087424
FixedWindows Server 2022, 23H2 Edition (Server Core installation)msrc_csaf
10.0.25398.2330:Security Update:https://support.microsoft.com/help/5087541
https://support.microsoft.com/help/5087541
FixedWindows Server 2025msrc_csaf
10.0.26100.32772:Security Hotpatch Update:https://support.microsoft.com/help/5087423
https://support.microsoft.com/help/5087423
FixedWindows Server 2025 (Server Core installation)msrc_csaf
10.0.26100.32772:Security Hotpatch Update:https://support.microsoft.com/help/5087423
https://support.microsoft.com/help/5087423

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · NCSC-NL NL

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-121USCWE-121USCWE-121USCWE-121US

exploits (8)

Public proof-of-concept and weaponised exploit code.

affected products (119)

Products and version ranges known to be affected.

Hitachi Virtual Storage Platform 5100all versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5100
Hitachi Virtual Storage Platform 5100Hall versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5100h
Hitachi Virtual Storage Platform 5200all versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5200
Hitachi Virtual Storage Platform 5200Hall versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5200h
Hitachi Virtual Storage Platform 5500all versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5500
Hitachi Virtual Storage Platform 5500Hall versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5500h
Hitachi Virtual Storage Platform 5600all versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5600
Hitachi Virtual Storage Platform 5600Hall versionscert_bundDEcpe:/h:hitachi:virtual_storage_platform:5600h
Microsoft Windows 10 Version 1607all versionscert_bundDEcpe:/o:microsoft:windows_10:version_1607
Microsoft Windows 10 Version 1809all versionscert_bundDEcpe:/o:microsoft:windows_10:version_1809
Microsoft Windows 10 Version 21H2all versionscert_bundDEcpe:/o:microsoft:windows_10:version_21h2
Microsoft Windows 10 Version 22H2all versionscert_bundDEcpe:/o:microsoft:windows_10:version_22h2
Microsoft Windows 11 Version 23H2all versionscert_bundDEcpe:/o:microsoft:windows_11:version_23h2
Microsoft Windows 11 Version 24H2all versionscert_bundDEcpe:/o:microsoft:windows_11:version_24h2
Microsoft Windows 11 Version 25H2all versionscert_bundDEcpe:/o:microsoft:windows_11:version_25h2
Microsoft Windows 11 version 26H1all versionscert_bundDE
Microsoft Windows Admin Center in Azure Portalall versionscert_bundDEcpe:/a:microsoft:windows_admin_center:in_azure_portal
Microsoft Windows Server 2012all versionscert_bundDEcpe:/o:microsoft:windows_server_2012:-
Microsoft Windows Server 2012 R2all versionscert_bundDEcpe:/o:microsoft:windows_server_2012_r2:-
Microsoft Windows Server 2016all versionscert_bundDEcpe:/o:microsoft:windows_server_2016:-

showing 20 of 119

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2026-0141Kwetsbaarheden verholpen in Microsoft WindowsNL2026-05-12csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in Windows.
WID-SEC-W-2026-1489Microsoft Windows Produkte: Mehrere SchwachstellenDeutsch2026-05-12csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Windows Produkten ausnutzen, um beliebigen Programmcode auszuführen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, und um Sicherheitsvorkehrungen zu umgehen.
msrc_CVE-2026-41089Windows Netlogon Remote Code Execution Vulnerability2026-05-12csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund ncsc_nl msrc_csaf NVD CVE.org MITRE

published 2026-05-12modified 2026-10-26

references (3)

External citations — patches, advisories, analysis.

scry

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