CVE-2026-50411
Windows Active Directory Federation Services Denial of Service Vulnerability
CVE-2026-50411 is fixed in 75 products on 1 platform, first by KB5099535, released July 14, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.5
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0117
67th percentile
<p>Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for 32-bit Systems | 14393.9339 | KB5099535 | Jul 14, 2026 |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for x64-based Systems | 14393.9339 | KB5099535 | Jul 14, 2026 |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems | KB5100989 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems | KB5100989 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 | 14393.9339 | KB5099535 | Jul 14, 2026 |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 (Server Core installation) | 14393.9339 | KB5099535 | Jul 14, 2026 |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | KB5100989 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) | KB5100989 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems | KB5101008 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | KB5101008 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for 32-bit Systems | KB5101006 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems | KB5101006 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems | KB5101006 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for 32-bit Systems | KB5101006 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems | KB5101006 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems | KB5101006 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | KB5101008 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) | KB5101008 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 | KB5101010 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 (Server Core installation) | KB5101010 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for 32-bit Systems | KB5101000 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for ARM64-based Systems | KB5101000 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for x64-based Systems | KB5101000 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for 32-bit Systems | KB5101000 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for ARM64-based Systems | KB5101000 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for x64-based Systems | KB5101000 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for ARM64-based Systems | KB5101004 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for x64-based Systems | KB5101004 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for ARM64-based Systems | KB5101001 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for x64-based Systems | KB5101001 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for ARM64-based Systems | KB5100998 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 25H2 for x64-based Systems | KB5100998 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 | KB5101005 | Jul 14, 2026 | |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 (Server Core installation) | KB5101005 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 | KB5100990 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation) | KB5100990 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 | KB5100991 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation) | KB5100991 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems | KB5101007 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems | KB5101007 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 | KB5101009 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | KB5101009 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | KB5101011 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | KB5101011 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.8 on Windows Server 2016 | KB5101007 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.8 on Windows Server 2016 (Server Core installation) | KB5101007 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.8.1 on Windows 11 Version 26H1 for ARM64-based Systems | KB5101002 | Jul 14, 2026 | |
| Microsoft .NET Framework 4.8.1 on Windows 11 version 26H1 for x64-based Systems | KB5101002 | Jul 14, 2026 | |
| Windows 10 Version 1607 for 32-bit Systems | 14393.9339 | KB5099535 | Jul 14, 2026 |
| Windows 10 Version 1607 for x64-based Systems | 14393.9339 | KB5099535 | Jul 14, 2026 |
| Windows 10 Version 1809 for 32-bit Systems | 17763.9020 | KB5099538 | Jul 14, 2026 |
| Windows 10 Version 1809 for x64-based Systems | 17763.9020 | KB5099538 | Jul 14, 2026 |
| Windows 10 Version 21H2 for 32-bit Systems | KB5099539 | Jul 14, 2026 | |
| Windows 10 Version 21H2 for ARM64-based Systems | KB5099539 | Jul 14, 2026 | |
| Windows 10 Version 21H2 for x64-based Systems | KB5099539 | Jul 14, 2026 | |
| Windows 10 Version 22H2 for 32-bit Systems | KB5099539 | Jul 14, 2026 | |
| Windows 10 Version 22H2 for ARM64-based Systems | KB5099539 | Jul 14, 2026 | |
| Windows 10 Version 22H2 for x64-based Systems | KB5099539 | Jul 14, 2026 | |
| Windows 11 Version 24H2 for ARM64-based Systems | KB5101650 | Jul 14, 2026 | |
| Windows 11 Version 24H2 for x64-based Systems | KB5101650 | Jul 14, 2026 | |
| Windows 11 Version 25H2 for ARM64-based Systems | KB5101650 | Jul 14, 2026 | |
| Windows 11 Version 25H2 for x64-based Systems | KB5101650 | Jul 14, 2026 | |
| Windows 11 Version 26H1 for ARM64-based Systems | 28000.2525 | KB5101649 | Jul 14, 2026 |
| Windows 11 version 26H1 for x64-based Systems | 28000.2525 | KB5101649 | Jul 14, 2026 |
| Windows Server 2012 | KB5099445 | Jul 14, 2026 | |
| Windows Server 2012 (Server Core installation) | KB5099445 | Jul 14, 2026 | |
| Windows Server 2012 R2 | KB5099444 | Jul 14, 2026 | |
| Windows Server 2012 R2 (Server Core installation) | KB5099444 | Jul 14, 2026 | |
| Windows Server 2016 | 14393.9339 | KB5099535 | Jul 14, 2026 |
| Windows Server 2016 (Server Core installation) | 14393.9339 | KB5099535 | Jul 14, 2026 |
| Windows Server 2019 | 17763.9020 | KB5099538 | Jul 14, 2026 |
| Windows Server 2019 (Server Core installation) | 17763.9020 | KB5099538 | Jul 14, 2026 |
| Windows Server 2022 | 20348.5386 | KB5099540 | Jul 14, 2026 |
| Windows Server 2025 | 26100.33158 | KB5099536 | Jul 14, 2026 |
| Windows Server 2025 (Server Core installation) | 26100.33158 | KB5099536 | Jul 14, 2026 |
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