CVE-2026-50304

highpriority · track · 0EPSS 0.012 · 67 %ileDEEUJPNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.17% (67th) EPSS

CVSS 7.5 · high

Is it mine?

116 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Stack-based buffer overflow in Active Directory Federation Services 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.

FixedMicrosoft .NET Framework 3.5 AND 4.7.2msrc_csaf
2.0.50727.8983 & 3.0.30729.8978 & 4.7.4143.0:Security Update:https://support.microsoft.com/help/5099535
https://support.microsoft.com/help/5099535
FixedMicrosoft .NET Framework 3.5 AND 4.8msrc_csaf
2.0.50727.9182 & 3.0.30729.9168 & 4.8.4803.0:Security Update:https://support.microsoft.com/help/5101006
https://support.microsoft.com/help/5101006
FixedMicrosoft .NET Framework 3.5 AND 4.8.1msrc_csaf
2.0.50727.9182 & 3.0.30729.9168 & 4.8.9340.0:Security Update:https://support.microsoft.com/help/5100998
https://support.microsoft.com/help/5100998
FixedMicrosoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2msrc_csaf
4.7.4143.0:Security Update:https://support.microsoft.com/help/5100990
https://support.microsoft.com/help/5100990
FixedMicrosoft .NET Framework 4.8msrc_csaf
4.8.4803.0:Security Update:https://support.microsoft.com/help/5101007
https://support.microsoft.com/help/5101007
FixedMicrosoft .NET Framework 4.8.1msrc_csaf
4.8.9340.0:Security Update:https://support.microsoft.com/help/5101002
https://support.microsoft.com/help/5101002
FixedWindows 10 Version 1607 for 32-bit Systemsmsrc_csaf
10.0.14393.9339:Security Update:https://support.microsoft.com/help/5099535
https://support.microsoft.com/help/5099535
FixedWindows 10 Version 1607 for x64-based Systemsmsrc_csaf
10.0.14393.9339:Security Update:https://support.microsoft.com/help/5099535
https://support.microsoft.com/help/5099535
FixedWindows 10 Version 1809 for 32-bit Systemsmsrc_csaf
10.0.17763.9020:Security Update:https://support.microsoft.com/help/5099538
https://support.microsoft.com/help/5099538
FixedWindows 10 Version 1809 for x64-based Systemsmsrc_csaf
10.0.17763.9020:Security Update:https://support.microsoft.com/help/5099538
https://support.microsoft.com/help/5099538
FixedWindows Server 2012msrc_csaf
6.2.9200.26226:Monthly Rollup:https://support.microsoft.com/help/5099445
https://support.microsoft.com/help/5099445
FixedWindows Server 2012 (Server Core installation)msrc_csaf
6.2.9200.26226:Monthly Rollup:https://support.microsoft.com/help/5099445
https://support.microsoft.com/help/5099445
FixedWindows Server 2012 R2msrc_csaf
6.3.9600.23291:Monthly Rollup:https://support.microsoft.com/help/5099444
https://support.microsoft.com/help/5099444
FixedWindows Server 2012 R2 (Server Core installation)msrc_csaf
6.3.9600.23291:Monthly Rollup:https://support.microsoft.com/help/5099444
https://support.microsoft.com/help/5099444
FixedWindows Server 2016msrc_csaf
10.0.14393.9339:Security Update:https://support.microsoft.com/help/5099535
https://support.microsoft.com/help/5099535
FixedWindows Server 2016 (Server Core installation)msrc_csaf
10.0.14393.9339:Security Update:https://support.microsoft.com/help/5099535
https://support.microsoft.com/help/5099535
FixedWindows Server 2019msrc_csaf
10.0.17763.9020:Security Update:https://support.microsoft.com/help/5099538
https://support.microsoft.com/help/5099538
FixedWindows Server 2019 (Server Core installation)msrc_csaf
10.0.17763.9020:Security Update:https://support.microsoft.com/help/5099538
https://support.microsoft.com/help/5099538
FixedWindows Server 2022msrc_csaf
10.0.20348.5386:Security Update:https://support.microsoft.com/help/5099540
https://support.microsoft.com/help/5099540
FixedWindows Server 2025msrc_csaf
10.0.26100.33158:Security Update:https://support.microsoft.com/help/5099536
https://support.microsoft.com/help/5099536
FixedWindows Server 2025 (Server Core installation)msrc_csaf
10.0.26100.33158:Security Update:https://support.microsoft.com/help/5099536
https://support.microsoft.com/help/5099536

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:H/E:U/RL:O/RC:Csecondary · 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.

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

weaknesses

The CWE weakness classes this flaw belongs to.

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

affected products (116)

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 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_bundDEcpe:/o:microsoft:windows_11:version_26h1
Microsoft Windows Admin Centerall versionscert_bundDEcpe:/a:microsoft:windows_admin_center:-
Microsoft Windows Remote Helpall versionscert_bundDEcpe:/o:microsoft:windows:remote_help
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 2025all versionscert_bundDEcpe:/o:microsoft:windows_server_2025:-
Microsoft Microsoft .NET Framework 3.5 AND 4.7.24.7.0 → 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0enisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.84.8.0 → 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0enisa_euvdEU
Microsoft Microsoft .NET Framework 3.5 AND 4.8.14.8.1 → 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0enisa_euvdEU

showing 20 of 116

advisories (4)

Vendor and ecosystem advisories describing this.

NCSC-2026-0231Kwetsbaarheden verholpen in Microsoft WindowsNL2026-07-14csaf · ncsc_nlNL
Microsoft heeft een zeer groot aantal kwetsbaarheden verholpen in Windows.
WID-SEC-W-2026-2316Microsoft Windows Produkte: Mehrere SchwachstellenDeutsch2026-07-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Windows Produkten ausnutzen, um seine Privilegien zu erhöhen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um falsche Informationen darzustellen, um Daten zu manipulieren, und um Sicherheitsvorkehrungen zu umgehen.
msrc_CVE-2026-50304Windows Active Directory Federation Services Denial of Service Vulnerability2026-07-14csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
JVNDB-2026-032925JVN iPedia advisory JVNDB-2026-0329252026-09-14vendor · jvndbJP

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 jvndb NVD CVE.org MITRE

published 2026-07-14modified 2026-07-22

references (3)

External citations — patches, advisories, analysis.

scry

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