Bug 2548802 (CVE-2026-96222) - CVE-2026-96222 dotnet8.0: Active Directory Federation Services (AD FS) Spoofing Vulnerability
Summary: CVE-2026-96222 dotnet8.0: Active Directory Federation Services (AD FS) Spoofi...
Keywords:
Status: NEW
Alias: CVE-2026-96222
Deadline: 2026-10-13
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2553823
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-09 19:42 UTC by Charles Timko
Modified: 2026-10-16 18:29 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description Charles Timko 2026-10-09 19:42:20 UTC 
Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

Affected packages:
- System.Security.Cryptography.Xml (release 8.0): 8.0.0 - 8.0.4; fixed 8.0.5
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