CVE-2025-33056

highpriority · track · 1EPSS 0.017 · 76 %ileDEEUNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.65% (76th) EPSS

CVSS 7.5 · high

Is it mine?

249 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Improper access control in Microsoft Local Security Authority Server (lsasrv) allows an unauthorized attacker to deny service over a network.

remediations

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

A vendor fix is available.

FixedWindows 10 Version 1607 for 32-bit Systemsmsrc_csaf
10.0.14393.8148:Security Update:https://support.microsoft.com/help/5061010
https://support.microsoft.com/help/5061010
FixedWindows 10 Version 1607 for x64-based Systemsmsrc_csaf
10.0.14393.8148:Security Update:https://support.microsoft.com/help/5061010
https://support.microsoft.com/help/5061010
FixedWindows 10 Version 1809 for 32-bit Systemsmsrc_csaf
10.0.17763.7434:Security Update:https://support.microsoft.com/help/5060531
https://support.microsoft.com/help/5060531
FixedWindows 10 Version 1809 for x64-based Systemsmsrc_csaf
10.0.17763.7434:Security Update:https://support.microsoft.com/help/5060531
https://support.microsoft.com/help/5060531
FixedWindows 10 Version 21H2 for 32-bit Systemsmsrc_csaf
10.0.19044.5965:Security Update:https://support.microsoft.com/help/5060533
https://support.microsoft.com/help/5060533
FixedWindows 10 Version 21H2 for ARM64-based Systemsmsrc_csaf
10.0.19044.5965:Security Update:https://support.microsoft.com/help/5060533
https://support.microsoft.com/help/5060533
FixedWindows 10 Version 21H2 for x64-based Systemsmsrc_csaf
10.0.19044.5965:Security Update:https://support.microsoft.com/help/5060533
https://support.microsoft.com/help/5060533
FixedWindows 10 Version 22H2 for 32-bit Systemsmsrc_csaf
10.0.19045.5965:Security Update:https://support.microsoft.com/help/5060533
https://support.microsoft.com/help/5060533
FixedWindows 10 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.19045.5965:Security Update:https://support.microsoft.com/help/5060533
https://support.microsoft.com/help/5060533
FixedWindows 10 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.19045.5965:Security Update:https://support.microsoft.com/help/5060533
https://support.microsoft.com/help/5060533
FixedWindows 10 for 32-bit Systemsmsrc_csaf
10.0.10240.21034:Security Update:https://support.microsoft.com/help/5060998
https://support.microsoft.com/help/5060998
FixedWindows 10 for x64-based Systemsmsrc_csaf
10.0.10240.21034:Security Update:https://support.microsoft.com/help/5060998
https://support.microsoft.com/help/5060998
FixedWindows 11 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.22621.5472:Security Update:https://support.microsoft.com/help/5060999
https://support.microsoft.com/help/5060999
FixedWindows 11 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.22621.5472:Security Update:https://support.microsoft.com/help/5060999
https://support.microsoft.com/help/5060999
FixedWindows 11 Version 23H2 for ARM64-based Systemsmsrc_csaf
10.0.22631.5472:Security Update:https://support.microsoft.com/help/5060999
https://support.microsoft.com/help/5060999
FixedWindows 11 Version 23H2 for x64-based Systemsmsrc_csaf
10.0.22631.5472:Security Update:https://support.microsoft.com/help/5060999
https://support.microsoft.com/help/5060999
FixedWindows 11 Version 24H2 for ARM64-based Systemsmsrc_csaf
10.0.26100.4270:SecurityHotpatchUpdate:https://support.microsoft.com/help/5060841
https://support.microsoft.com/help/5060841
FixedWindows 11 Version 24H2 for x64-based Systemsmsrc_csaf
10.0.26100.4270:SecurityHotpatchUpdate:https://support.microsoft.com/help/5060841
https://support.microsoft.com/help/5060841
FixedWindows Server 2008 R2 for x64-based Systems Service Pack 1msrc_csaf
6.1.7601.27769:Security Only:https://support.microsoft.com/help/5061036
https://support.microsoft.com/help/5061036
FixedWindows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)msrc_csaf
6.1.7601.27769:Security Only:https://support.microsoft.com/help/5061036
https://support.microsoft.com/help/5061036
FixedWindows Server 2008 for 32-bit Systems Service Pack 2msrc_csaf
6.0.6003.23351:Monthly Rollup:https://support.microsoft.com/help/5061026
https://support.microsoft.com/help/5061026
FixedWindows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)msrc_csaf
6.0.6003.23351:Monthly Rollup:https://support.microsoft.com/help/5061026
https://support.microsoft.com/help/5061026
FixedWindows Server 2008 for x64-based Systems Service Pack 2msrc_csaf
6.0.6003.23351:Monthly Rollup:https://support.microsoft.com/help/5061026
https://support.microsoft.com/help/5061026
FixedWindows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)msrc_csaf
6.0.6003.23351:Monthly Rollup:https://support.microsoft.com/help/5061026
https://support.microsoft.com/help/5061026
FixedWindows Server 2012msrc_csaf
6.2.9200.25522:Monthly Rollup:https://support.microsoft.com/help/5061059
https://support.microsoft.com/help/5061059
FixedWindows Server 2012 (Server Core installation)msrc_csaf
6.2.9200.25522:Monthly Rollup:https://support.microsoft.com/help/5061059
https://support.microsoft.com/help/5061059
FixedWindows Server 2012 R2msrc_csaf
6.3.9600.22620:Monthly Rollup:https://support.microsoft.com/help/5061018
https://support.microsoft.com/help/5061018
FixedWindows Server 2012 R2 (Server Core installation)msrc_csaf
6.3.9600.22620:Monthly Rollup:https://support.microsoft.com/help/5061018
https://support.microsoft.com/help/5061018
FixedWindows Server 2016msrc_csaf
10.0.14393.8148:Security Update:https://support.microsoft.com/help/5061010
https://support.microsoft.com/help/5061010
FixedWindows Server 2016 (Server Core installation)msrc_csaf
10.0.14393.8148:Security Update:https://support.microsoft.com/help/5061010
https://support.microsoft.com/help/5061010
FixedWindows Server 2019msrc_csaf
10.0.17763.7434:Security Update:https://support.microsoft.com/help/5060531
https://support.microsoft.com/help/5060531
FixedWindows Server 2019 (Server Core installation)msrc_csaf
10.0.17763.7434:Security Update:https://support.microsoft.com/help/5060531
https://support.microsoft.com/help/5060531
FixedWindows Server 2022msrc_csaf
10.0.20348.3745:SecurityHotpatchUpdate:https://support.microsoft.com/help/5060525
https://support.microsoft.com/help/5060525
FixedWindows Server 2022 (Server Core installation)msrc_csaf
10.0.20348.3745:SecurityHotpatchUpdate:https://support.microsoft.com/help/5060525
https://support.microsoft.com/help/5060525
FixedWindows Server 2022, 23H2 Edition (Server Core installation)msrc_csaf
10.0.25398.1665:Security Update:https://support.microsoft.com/help/5060118
https://support.microsoft.com/help/5060118
FixedWindows Server 2025msrc_csaf
10.0.26100.4270:SecurityHotpatchUpdate:https://support.microsoft.com/help/5060841
https://support.microsoft.com/help/5060841
FixedWindows Server 2025 (Server Core installation)msrc_csaf
10.0.26100.4270:SecurityHotpatchUpdate:https://support.microsoft.com/help/5060841
https://support.microsoft.com/help/5060841

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · secure@microsoft.com USexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · NCSC-NL NL

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284USCWE-284USCWE-284USCWE-284US

affected products (249)

Products and version ranges known to be affected.

Hitachi Storageall versionscert_bundDEcpe:/h:hitachi:storage:-
Insyde UEFI Firmwareall versionscert_bundDEcpe:/h:insyde:uefi:-
Microsoft Windows 10all versionscert_bundDEcpe:/o:microsoft:windows_10:-
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 22H2all versionscert_bundDEcpe:/o:microsoft:windows_11: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 Admin Centerall versionscert_bundDEcpe:/o:microsoft:windows:update_assistant
Microsoft Windows App Client for Desktopall versionscert_bundDEcpe:/o:microsoft:windows:app_client_for_desktop
Microsoft Windows Remote Desktop Clientall versionscert_bundDEcpe:/o:microsoft:windows:remote_desktop_client_for_desktop
Microsoft Windows Server 2008 R2 SP1all versionscert_bundDEcpe:/o:microsoft:windows_server:2008_r2_sp1
Microsoft Windows Server 2008 SP2all versionscert_bundDEcpe:/o:microsoft:windows_server:2008_sp2
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:-
Microsoft Windows Server 2019all versionscert_bundDEcpe:/o:microsoft:windows_server_2019:-
Microsoft Windows Server 2022all versionscert_bundDEcpe:/o:microsoft:windows_server_2022:-

showing 20 of 249

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2025-0188Kwetsbaarheden verholpen in Microsoft WindowsNL2025-06-10csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in Windows.
WID-SEC-W-2025-1277Microsoft Windows: Mehrere SchwachstellenDeutsch2025-06-10csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in verschiedenen Versionen von Microsoft Windows und Microsoft Windows Server ausnutzen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um beliebigen Programmcode auszuführen, um Informationen offenzulegen, um Sicherheitsvorkehrungen zu umgehen, und um falsche Informationen darzustellen.
msrc_CVE-2025-33056Windows Local Security Authority (LSA) Denial of Service Vulnerability2025-06-10csaf · 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 2025-06-10modified 2026-06-17

references (3)

External citations — patches, advisories, analysis.

scry

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