Medium severity4.8NVD Advisory· Published Oct 13, 2026· Updated Oct 13, 2026

CVE-2026-83646

Description

Url redirection to untrusted site ('open redirect') in Active Directory Federation Services (AD FS) allows an authorized attacker to perform spoofing over a network.

Affected products

Microsoft/Active Directory Federation Servicesllm-fuzzy

Patches

Vulnerability mechanics

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83646nvd

News mentions

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cvss	0.312
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000