CVE-2026-24899: falha de alta gravidade em fleetdm fleet
Fleet Windows MDM Azure AD JWT Authentication Bypass
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 8.2epss 0.4%
Fleet is open source device management software. Prior to version 4.82.0, a vulnerability in Fleet's Windows MDM enrollment flow allows authentication tokens from any Azure AD tenant to be accepted. Because Fleet validates JWT signatures using Microsoft's multi-tenant JWKS endpoint but does not enforce the `aud` (audience) or `iss` (issuer) claims, any Microsoft-signed Azure AD access token containing the expected scopes can be used to authenticate to Fleet's MDM endpoints. If Windows MDM is enabled, an attacker with access to any Azure AD tenant can obtain a valid Microsoft-signed token and use it to enroll unauthorized devices and interact with Fleet's MDM management APIs. During device management, Fleet may expose sensitive enrollment secrets embedded in MDM command payloads, enabling further unauthorized access. Version 4.82.0 contains a patch. If an immediate upgrade is not possible, affected Fleet users should temporarily disable Windows MDM.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Produtos afetados
fleetdm · fleetCVEs relacionadas — fleetdm fleet
No mesmo produto, das mais perigosas para as menos.
CVE-2020-26276CRITICALSAML authentication vulnerability in FleetEPSS 2.2%CVE-2021-21296LOWDenial-of-service in FleetEPSS 2.0%CVE-2026-34387MEDIUMFleet vulnerable to OS command injection via crafted software package metadata in uninstall scriptsEPSS 1.3%CVE-2022-23600MEDIUMLimited ability to spoof SAML authentication with missing audience verificationEPSS 0.9%CVE-2022-24841MEDIUMImproper Authorization in github.com/fleetdm/fleetEPSS 0.8%CVE-2026-26191MEDIUMFleet vulnerable to OS command injection in software packagesEPSS 0.8%