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Fleet has a Windows MDM management endpoint authentication bypass

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

Dated risk observations

Risk history is separate from CNA/OSV content history. Daily score drift is retained but only an upward crossing of 10% triggers the prediction change event.

Immutable source observations

6 recorded revisions

Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.

28 Oct 2026 02:05:48 UTC

Fleet is open source device management software. Prior to version 4.81.0, a vulnerability in Fleet’s Windows MDM management endpoint could allow requests to be processed without proper client certificate validation. In certain circumstances…

euvd · EUVD-2026-30368 · Published

27 Oct 2026 06:23:38 UTC

Fleet is open source device management software. Prior to version 4.81.0, a vulnerability in Fleet’s Windows MDM management endpoint could allow requests to be processed without proper client certificate validation. In certain circumstances…

nvd · CVE-2026-23998 · Published

25 Oct 2026 05:17:36 UTC

Fleet is open source device management software. Prior to version 4.81.0, a vulnerability in Fleet’s Windows MDM management endpoint could allow requests to be processed without proper client certificate validation. In certain circumstances…

nvd · CVE-2026-23998 · Published

24 Oct 2026 13:19:41 UTC

Fleet has a Windows MDM management endpoint authentication bypass

osv · GHSA-2rc4-7jc6-qffh · Published

24 Oct 2026 13:19:41 UTC

Windows MDM management endpoint authentication bypass in github.com/fleetdm/fleet/v4

osv · GO-2026-5002 · Published

23 Oct 2026 15:48:27 UTC

Fleet has a Windows MDM management endpoint authentication bypass

cve-program · CVE-2026-23998 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 28 Oct 11:30 UTC · 270 of 272 readable · 268 fully read · documentation 469/469 current