attack vector is network; attack complexity is high; privileges required is none; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products
see table below
Classified as
CWE-290 (Authentication Bypass by Spoofing)
Affected Products, Subsystems & Sectors
Vendor
Product
Affected Versions
Patch Status
Microsoft
Windows 11 (version 23H2)
Microsoft
Windows 11 (version 24H2)
Microsoft
Windows 11 (version 25H2)
Microsoft
Windows 11 (version 26H1)
Microsoft
Windows Server 2025
Microsoft
Windows 10 (version 1607)
Microsoft
Windows 10 (version 1809)
Microsoft
Windows 10 (version 21H2)
Microsoft
Windows 10 (version 22H2)
Microsoft
Windows Server 2012
Microsoft
Windows Server 2016
Microsoft
Windows Server 2019
Microsoft
Windows Server 2022
Microsoft
Windows Server 2012 R2
Microsoft
Windows 11 Version 26H2
Subsystems
OT Supporting Infrastructure
Sectors
All Sectors
What to Know
No cwe for this issue in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.
What to Do
Monitor Microsoft's web page for any future patch releases.