CVE-2026-96222

Active Directory Federation Services (AD FS) Spoofing Vulnerability

HIGH
7.4
CVSS Score
Published: October 13, 2026 at 07:00 PM UTC
Updated: October 26, 2026 at 07:10 PM UTC
13 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows Server 2012· also runs on 16 platforms

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Severity
HIGH7.4
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-295

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