CVE-2026-96222High· 7.4▾ TwilightImproper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 40.7 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.6%
0.6% → 0.6%
Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
System.Security.Cryptography.Xml >= 8.0.0, <= 8.0.4Patched in:
System.Security.Cryptography.Xml 8.0.5Source: https://github.com/advisories/GHSA-vrv5-2jg9-4mmr
Connected by shared product, vendor, weakness, or advisory.
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