CVE-2024-21427

highpriority · track · 1EPSS 0.015 · 74 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.52% (74th) EPSS

CVSS 7.5 · high

Is it mine?

68 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Windows Kerberos Security Feature Bypass Vulnerability

remediations

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

A vendor fix is available.

FixedWindows Server 2012 R2msrc_csaf
6.3.9600.21924:Monthly Rollup:https://support.microsoft.com/help/5036960
https://support.microsoft.com/help/5036960
FixedWindows Server 2012 R2 (Server Core installation)msrc_csaf
6.3.9600.21924:Monthly Rollup:https://support.microsoft.com/help/5036960
https://support.microsoft.com/help/5036960
FixedWindows Server 2016msrc_csaf
10.0.14393.6897:Security Update:https://support.microsoft.com/help/5036899
https://support.microsoft.com/help/5036899
FixedWindows Server 2016 (Server Core installation)msrc_csaf
10.0.14393.6897:Security Update:https://support.microsoft.com/help/5036899
https://support.microsoft.com/help/5036899
FixedWindows Server 2019msrc_csaf
10.0.17763.5696:Security Update:https://support.microsoft.com/help/5036896
https://support.microsoft.com/help/5036896
FixedWindows Server 2019 (Server Core installation)msrc_csaf
10.0.17763.5696:Security Update:https://support.microsoft.com/help/5036896
https://support.microsoft.com/help/5036896
FixedWindows Server 2022msrc_csaf
10.0.20348.2333:SecurityHotpatchUpdate:https://support.microsoft.com/help/5035959
https://support.microsoft.com/help/5035959
FixedWindows Server 2022 (Server Core installation)msrc_csaf
10.0.20348.2333:SecurityHotpatchUpdate:https://support.microsoft.com/help/5035959
https://support.microsoft.com/help/5035959
FixedWindows Server 2022, 23H2 Edition (Server Core installation)msrc_csaf
10.0.25398.830:Security Update:https://support.microsoft.com/help/5036910
https://support.microsoft.com/help/5036910

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:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

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

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 1.6 · impact 5.9

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

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:L/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: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-254USCWE-287USCWE-287US

affected products (68)

Products and version ranges known to be affected.

Hitachi Storageall versionscert_bundDEcpe:/h:hitachi:storage:-
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 10 Windows Terminalall versionscert_bundDEcpe:/o:microsoft:windows_10:windows_terminal
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 21H2all versionscert_bundDE
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:::r2_server_core_installation
Microsoft Windows Server 2012 R2all versionscert_bundDEcpe:/o:microsoft:windows_server_2012_r2:-
Microsoft Windows Server 2016all versionscert_bundDEcpe:/o:microsoft:windows_server_2016:server_2016::server_core_installation
Microsoft Windows Server 2019all versionscert_bundDEcpe:/o:microsoft:windows_server_2019:server_core_installation
Microsoft Windows Server 2022 23H2 Editionall versionscert_bundDEcpe:/o:microsoft:windows_server_2022:23h2_edition
Microsoft Windows Server 2022 Datacenter: Azure Editionall versionscert_bundDEcpe:/o:microsoft:windows_server_2022:datacenter_azure_edition
Microsoft Windows 11≤ version 21H2cert_bundDE
Microsoft Windows Server 2012 R26.3.9600.0 → 6.3.9600.21924enisa_euvdEU
Microsoft Windows Server 2012 R2 (Server Core installation)6.3.9600.0 → 6.3.9600.21924enisa_euvdEU

showing 20 of 68

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-0619Microsoft Windows: Mehrere SchwachstellenDeutsch2024-03-12csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Microsoft Windows ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen, beliebigen Programmcode auszuführen, seine Privilegien zu erweitern, einen Denial of Service Zustand herbeizuführen, Dateien zu manipulieren, Sicherheitsvorkehrungen zu umgehen oder Infor mationen offenzulegen.
msrc_CVE-2024-21427Windows Kerberos Security Feature Bypass Vulnerability2024-03-12csaf · 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 msrc_csaf NVD CVE.org MITRE

published 2024-03-12modified 2026-06-17

references (5)

External citations — patches, advisories, analysis.

scry

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