HIGH Published October 13, 2026

CVE-2026-85321

Allocation of resources without limits or throttling in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.

CVSS base score

7.5 (v3.1)

Severity

HIGH

Attack vector

Network

Weakness

CWE-770

Last modified

October 29, 2026

CVSS vector

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

Affected products

microsoft windows server 2012 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-2026-85321

Affected products

References

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Published the same day

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