BaselineWatch
Desk
Your fleet and your work Fleetyour releases and the hardware they run onTriagewhat needs a decisionWatchlistthe products and platforms you runSaved searchesthe lists you come back to
This instance Sourceswhat is read, how often, under what termsDigestthe daily or weekly summary, and alerts
How it is drawn Appearancethe look and the colour schemeBrandingthe mark this instance wears
Owner sign-in

CVE-2026-85321

7.5 high SSVC exploitation: none Published
NVD · CVE.org

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

Fix

Microsoft's update · Important

  • KB5126651 — Windows Server 2019, Windows Server 2019 (Server Core installation) · build 10.0.17763.9376 · restart required
  • KB5126655 — Windows Server 2022, Windows Server 2022 (Server Core installation) · build 10.0.20348.5761 · restart required
  • KB5126646 — Windows Server 2025 (Server Core installation), Windows Server 2025 · build 10.0.26100.33650 · restart required
  • KB5126868 — Windows Server 2016, Windows Server 2016 (Server Core installation) · build 10.0.14393.9612 · restart required
  • KB5126836 — Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation) · build 6.3.9600.23470 · restart required

From the 2026-Oct release note of Microsoft's Security Update Guide, revised 2026-10-29 · Exploitation Unlikely.

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 2

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-19 19:33
  2. First seenCVSS 7.5NVD modified 2026-10-13 21:19

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 1