MEDIUM Published October 13, 2026

CVE-2026-83646

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

CVSS base score

4.8 (v3.1)

Severity

MEDIUM

Attack vector

Network

Weakness

CWE-601

Last modified

October 29, 2026

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Affected products

microsoft windows 10 1607 microsoft windows 10 1809 microsoft windows server 2016 microsoft windows server 2019 microsoft windows server 2022 microsoft windows server 2025

References

msrc.microsoft.com Vendor Advisory

View full NVD advisory →

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CVE-2026-83646

Affected products

References

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