CVE-2025-21350

mediumpriority · track · 1EPSS 0.021 · 82 %ileDEEUNLRUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.13% (82nd) EPSS

CVSS 5.9 · medium

Is it mine?

160 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Windows Kerberos Denial of Service Vulnerability

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
10.0.14393.7785:Security Update:https://support.microsoft.com/help/5052006
https://support.microsoft.com/help/5052006
FixedWindows 10 Version 1607 for x64-based Systemsmsrc_csaf
10.0.14393.7785:Security Update:https://support.microsoft.com/help/5052006
https://support.microsoft.com/help/5052006
FixedWindows 10 Version 1809 for 32-bit Systemsmsrc_csaf
10.0.17763.6893:Security Update:https://support.microsoft.com/help/5052000
https://support.microsoft.com/help/5052000
FixedWindows 10 Version 1809 for x64-based Systemsmsrc_csaf
10.0.17763.6893:Security Update:https://support.microsoft.com/help/5052000
https://support.microsoft.com/help/5052000
FixedWindows 10 Version 21H2 for 32-bit Systemsmsrc_csaf
10.0.19044.5487:Security Update:https://support.microsoft.com/help/5051974
https://support.microsoft.com/help/5051974
FixedWindows 10 Version 21H2 for ARM64-based Systemsmsrc_csaf
10.0.19044.5487:Security Update:https://support.microsoft.com/help/5051974
https://support.microsoft.com/help/5051974
FixedWindows 10 Version 21H2 for x64-based Systemsmsrc_csaf
10.0.19044.5487:Security Update:https://support.microsoft.com/help/5051974
https://support.microsoft.com/help/5051974
FixedWindows 10 Version 22H2 for 32-bit Systemsmsrc_csaf
10.0.19045.5487:Security Update:https://support.microsoft.com/help/5051974
https://support.microsoft.com/help/5051974
FixedWindows 10 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.19045.5487:Security Update:https://support.microsoft.com/help/5051974
https://support.microsoft.com/help/5051974
FixedWindows 10 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.19045.5487:Security Update:https://support.microsoft.com/help/5051974
https://support.microsoft.com/help/5051974
FixedWindows 10 for 32-bit Systemsmsrc_csaf
10.0.10240.20915:Security Update:https://support.microsoft.com/help/5052040
https://support.microsoft.com/help/5052040
FixedWindows 10 for x64-based Systemsmsrc_csaf
10.0.10240.20915:Security Update:https://support.microsoft.com/help/5052040
https://support.microsoft.com/help/5052040
FixedWindows 11 Version 22H2 for ARM64-based Systemsmsrc_csaf
10.0.22621.4890:Security Update:https://support.microsoft.com/help/5051989
https://support.microsoft.com/help/5051989
FixedWindows 11 Version 22H2 for x64-based Systemsmsrc_csaf
10.0.22621.4890:Security Update:https://support.microsoft.com/help/5051989
https://support.microsoft.com/help/5051989
FixedWindows 11 Version 23H2 for ARM64-based Systemsmsrc_csaf
10.0.22631.4890:Security Update:https://support.microsoft.com/help/5051989
https://support.microsoft.com/help/5051989
FixedWindows 11 Version 23H2 for x64-based Systemsmsrc_csaf
10.0.22631.4890:Security Update:https://support.microsoft.com/help/5051989
https://support.microsoft.com/help/5051989
FixedWindows 11 Version 24H2 for ARM64-based Systemsmsrc_csaf
10.0.26100.3194:Security Update:https://support.microsoft.com/help/5051987
https://support.microsoft.com/help/5051987
FixedWindows 11 Version 24H2 for x64-based Systemsmsrc_csaf
10.0.26100.3194:Security Update:https://support.microsoft.com/help/5051987
https://support.microsoft.com/help/5051987
FixedWindows Server 2008 R2 for x64-based Systems Service Pack 1msrc_csaf
6.1.7601.27566:Monthly Rollup:https://support.microsoft.com/help/5052016
https://support.microsoft.com/help/5052016
FixedWindows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)msrc_csaf
6.1.7601.27566:Monthly Rollup:https://support.microsoft.com/help/5052016
https://support.microsoft.com/help/5052016
FixedWindows Server 2008 for 32-bit Systems Service Pack 2msrc_csaf
6.0.6003.23117:Monthly Rollup:https://support.microsoft.com/help/5052038
https://support.microsoft.com/help/5052038
FixedWindows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)msrc_csaf
6.0.6003.23117:Monthly Rollup:https://support.microsoft.com/help/5052038
https://support.microsoft.com/help/5052038
FixedWindows Server 2008 for x64-based Systems Service Pack 2msrc_csaf
6.0.6003.23117:Monthly Rollup:https://support.microsoft.com/help/5052038
https://support.microsoft.com/help/5052038
FixedWindows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)msrc_csaf
6.0.6003.23117:Monthly Rollup:https://support.microsoft.com/help/5052038
https://support.microsoft.com/help/5052038
FixedWindows Server 2012msrc_csaf
6.2.9200.25317:Monthly Rollup:https://support.microsoft.com/help/5052020
https://support.microsoft.com/help/5052020
FixedWindows Server 2012 (Server Core installation)msrc_csaf
6.2.9200.25317:Monthly Rollup:https://support.microsoft.com/help/5052020
https://support.microsoft.com/help/5052020
FixedWindows Server 2012 R2msrc_csaf
6.3.9600.22417:Monthly Rollup:https://support.microsoft.com/help/5052042
https://support.microsoft.com/help/5052042
FixedWindows Server 2012 R2 (Server Core installation)msrc_csaf
6.3.9600.22417:Monthly Rollup:https://support.microsoft.com/help/5052042
https://support.microsoft.com/help/5052042
FixedWindows Server 2016msrc_csaf
10.0.14393.7785:Security Update:https://support.microsoft.com/help/5052006
https://support.microsoft.com/help/5052006
FixedWindows Server 2016 (Server Core installation)msrc_csaf
10.0.14393.7785:Security Update:https://support.microsoft.com/help/5052006
https://support.microsoft.com/help/5052006
FixedWindows Server 2019msrc_csaf
10.0.17763.6893:Security Update:https://support.microsoft.com/help/5052000
https://support.microsoft.com/help/5052000
FixedWindows Server 2019 (Server Core installation)msrc_csaf
10.0.17763.6893:Security Update:https://support.microsoft.com/help/5052000
https://support.microsoft.com/help/5052000
FixedWindows Server 2022msrc_csaf
10.0.20348.3207:Security Update:https://support.microsoft.com/help/5051979
https://support.microsoft.com/help/5051979
FixedWindows Server 2022 (Server Core installation)msrc_csaf
10.0.20348.3207:Security Update:https://support.microsoft.com/help/5051979
https://support.microsoft.com/help/5051979
FixedWindows Server 2022, 23H2 Edition (Server Core installation)msrc_csaf
10.0.25398.1425:Security Update:https://support.microsoft.com/help/5051980
https://support.microsoft.com/help/5051980
FixedWindows Server 2025msrc_csaf
10.0.26100.3194:Security Update:https://support.microsoft.com/help/5051987
https://support.microsoft.com/help/5051987
FixedWindows Server 2025 (Server Core installation)msrc_csaf
10.0.26100.3194:Security Update:https://support.microsoft.com/help/5051987
https://support.microsoft.com/help/5051987

cvss

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

5.9

010

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

v3.15.9mediumAV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · secure@microsoft.com USexploitability 2.2 · impact 3.6

v3.15.4mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.15.9mediumCVSS:3.1/AV:N/AC:H/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-20USCWE-20USCWE-20USCWE-20US

affected products (160)

Products and version ranges known to be affected.

Hitachi Storageall versionscert_bundDEcpe:/h:hitachi:storage:-
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 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:-
Microsoft Windows Server 2022 23H2 Editionall versionscert_bundDEcpe:/o:microsoft:windows_server_2022:23h2_edition
Microsoft Windows Server 2025all versionscert_bundDEcpe:/o:microsoft:windows_server:2025
Microsoft Windows 10 Version 150710.0.10240.0 → 10.0.10240.20915enisa_euvdEU
Microsoft Windows 10 Version 160710.0.14393.0 → 10.0.14393.7785enisa_euvdEU

showing 20 of 160

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2025-0047Kwetsbaarheden verholpen in Microsoft WindowsNL2025-02-11csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in Windows.
WID-SEC-W-2025-0331Microsoft Windows: Mehrere SchwachstellenDeutsch2025-02-11csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Windows Server, Microsoft Windows Server 2012, Microsoft Windows Server 2012 R2, Microsoft Windows 10, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022 und Microsoft Windows 11 ausnutzen, um einen Denial-of-Service-Zustand herbeizuführen, Spoofing-Angriffe durchzuführen, beliebigen Code auszuführen, erhöhte Rechte zu erlangen - sogar SYSTEM-Rechte - und Daten zu manipulieren.
msrc_CVE-2025-21350Windows Kerberos Denial of Service Vulnerability2025-02-11csaf · 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 2025-02-11modified 2026-06-17

references (3)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

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