{"id":3550,"date":"2026-05-08T10:11:53","date_gmt":"2026-05-08T10:11:53","guid":{"rendered":"https:\/\/im-cybersec.com\/?p=3550"},"modified":"2026-05-08T10:13:00","modified_gmt":"2026-05-08T10:13:00","slug":"prepared-for-the-expiration-of-the-secure-boot-windows-uefi-2011-ca","status":"publish","type":"post","link":"https:\/\/im-cybersec.com\/fr\/prepared-for-the-expiration-of-the-secure-boot-windows-uefi-2011-ca\/","title":{"rendered":"\u00cates-vous pr\u00eat pour l\u2019expiration du certificat CA Secure Boot Windows UEFI 2011 ?\u00a0"},"content":{"rendered":"

De nombreux administrateurs syst\u00e8me ne sont peut-\u00eatre pas encore conscients que l\u2019Autorit\u00e9 de Certification (CA) utilis\u00e9e pour signer le Windows Secure Boot Loader ainsi que les bases de donn\u00e9es Secure Boot arrive prochainement \u00e0 expiration et doit \u00eatre remplac\u00e9e par une nouvelle. De nombreuses informations circulent en ligne \u00e0 ce sujet, mais la plupart sont incompl\u00e8tes. C\u2019est pourquoi nous souhaitons aborder cette probl\u00e9matique de mani\u00e8re compl\u00e8te, du point de vue d\u2019un administrateur syst\u00e8me.\u00a0<\/p>\n\n\n\n

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Le Secure Boot Windows UEFI utilise 4 bases de donn\u00e9es :\u00a0<\/strong><\/strong><\/h2><\/div>\n\n\n\n
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\u2013 KEK (Key Enrollment Key) : La CA stock\u00e9e ici est utilis\u00e9e pour signer les mises \u00e0 jour de la DB active et de la DBX. La CA Microsoft de 2011 stock\u00e9e ici expire en juin 2026. Une fois cette CA expir\u00e9e, aucune modification suppl\u00e9mentaire ne pourra \u00eatre sign\u00e9e dans la DB et la DBX.\u00a0
\u2013 Default DB : De nombreux OEM mettent \u00e0 jour la CA qu\u2019elle contient avec la CA Microsoft 2023. Cependant, cette Default DB n\u2019est pas utilis\u00e9e lors du d\u00e9marrage, sauf si vous r\u00e9initialisez le BIOS aux param\u00e8tres d\u2019usine.\u00a0
\u2013 Active DB (Secure Boot Signature Database) : C\u2019est ici que se trouve la CA utilis\u00e9e pour Secure Boot. La CA Microsoft 2011 pour le chargeur de d\u00e9marrage Windows expire en octobre 2026, tandis que celle pour les chargeurs de d\u00e9marrage tiers expire en juin 2026.\u00a0\u00a0
\u2013 DBX (Secure Boot Revoked Signature Database) : Certificats\/chargeurs de d\u00e9marrage r\u00e9voqu\u00e9s\u00a0<\/p>\n\n\n\n

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Que se passe-t-il lorsque la CA expire ?\u00a0<\/h2><\/div>\n\n\n\n
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Selon Microsoft, Secure Boot continue de fonctionner sur les installations Windows existantes. Cependant, aucune modification ne peut plus \u00eatre apport\u00e9e \u00e0 la configuration Secure Boot, et la base de donn\u00e9es des chargeurs de d\u00e9marrage r\u00e9voqu\u00e9s n\u2019est plus mise \u00e0 jour. Cela repr\u00e9sente un risque de s\u00e9curit\u00e9.\u00a0

Pour les administrateurs syst\u00e8me, cela signifie \u00e9galement que les outils de d\u00e9ploiement utilisant par exemple le d\u00e9marrage PXE ou USB ne fonctionnent plus, car l\u2019ancienne CA a expir\u00e9 et la nouvelle CA n\u2019est pas accept\u00e9e.\u00a0<\/p>\n\n\n\n

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Pourquoi la mise \u00e0 jour de la CA ne se fait-elle pas automatiquement ?\u00a0<\/strong><\/strong><\/h2><\/div>\n\n\n\n
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<\/div>\n<\/div><\/div>\n\n\n\n

En principe, cela peut se faire automatiquement, mais dans la r\u00e9alit\u00e9, une intervention reste n\u00e9cessaire. La Default DB est mise \u00e0 jour via les mises \u00e0 jour du BIOS, \u00e0 condition que le fabricant fournisse encore des mises \u00e0 jour pour le mod\u00e8le concern\u00e9. Cependant, la DB active est le facteur d\u00e9cisif. Celle-ci est cens\u00e9e recevoir la nouvelle CA UEFI 2023 via Windows Update, mais cette option est d\u00e9sactiv\u00e9e par d\u00e9faut. Une t\u00e2che est configur\u00e9e dans le Planificateur de t\u00e2ches Windows pour s\u2019ex\u00e9cuter toutes les 12 heures et \u00e9crire la CA UEFI 2023 dans la KEK et la DB active. Cependant, elle n\u2019y parvient g\u00e9n\u00e9ralement pas, car un param\u00e8tre dans le registre la bloque. C\u2019est la raison pour laquelle des messages d\u2019erreur 1801 provenant de TPM-WMI apparaissent dans le journal syst\u00e8me Windows.\u00a0<\/p>\n\n\n\n

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<\/div>\n<\/div><\/div>\n\n\n\n

Comment d\u00e9ployer la CA UEFI 2023 ?\u00a0<\/strong><\/strong><\/h2><\/div>\n\n\n\n
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<\/div>\n<\/div><\/div>\n\n\n\n

Selon nos informations, Secure Boot doit \u00eatre activ\u00e9 pour cela.\u00a0

Microsoft a fourni un mod\u00e8le administratif \u00e0 cet effet dans les Group Policy Templates pour Windows 11 25H2 (v2). Cependant, les noms des trois mod\u00e8les existants pour Secure Boot sont trompeurs, il est donc n\u00e9cessaire de v\u00e9rifier attentivement lequel vous activez. Dans la plupart des cas, vous activerez \u201cEnable Secure Boot Certificate Deployment\u201d.\u00a0

Une fois appliqu\u00e9, la t\u00e2che en arri\u00e8re-plan du Planificateur de t\u00e2ches peut \u00e9crire le certificat dans la KEK et la DB active.\u00a0\u00a0

Apr\u00e8s deux red\u00e9marrages, le processus est termin\u00e9.\u00a0

Cependant, il est recommand\u00e9 de surveiller le processus ainsi que son \u00e9tat. En utilisant deux r\u00e8gles d\u2019inventaire simples dans KACE ou Action1, vous pourrez d\u00e9terminer si le d\u00e9ploiement est effectivement activ\u00e9 et quel est le statut de la UEFI2023CA (NotStarted, InProgress ou Updated).\u00a0<\/p>\n\n\n\n

<\/p>\n\n\n\n

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<\/div>\n\n\n\n

Besoin d\u2019assistance pour le d\u00e9ploiement de la CA Secure Boot Windows ?<\/strong><\/h2><\/div>\n<\/div><\/div>\n\n\n\n
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<\/div>\n<\/div><\/div>\n\n\n\n

Si vous n\u2019\u00eates pas certain que votre environnement est d\u00e9j\u00e0 pr\u00eat pour l\u2019expiration prochaine de la CA Secure Boot, ou si vous souhaitez \u00e9viter des interruptions op\u00e9rationnelles et des failles de s\u00e9curit\u00e9, nous sommes l\u00e0 pour vous aider. Nous pouvons vous accompagner dans la planification et l\u2019ex\u00e9cution du d\u00e9ploiement de la CA UEFI 2023, la configuration des strat\u00e9gies de groupe n\u00e9cessaires, ainsi que la validation de la bonne application du d\u00e9ploiement sur l\u2019ensemble de vos terminaux. En outre, nous pouvons vous aider \u00e0 mettre en place un syst\u00e8me de monitoring et de reporting adapt\u00e9 afin que vous ayez toujours une vue claire des appareils conformes et de ceux n\u00e9cessitant encore une intervention manuelle. Contactez-nous pour une consultation et assurez-vous que votre infrastructure reste s\u00e9curis\u00e9e et pr\u00eate pour l\u2019avenir, sans risques inutiles ni probl\u00e8mes de derni\u00e8re minute.<\/p>\n\n\n\n

<\/p>\n\n\n\n

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R\u00e9server un appel<\/div><\/a><\/div><\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

Many system administrators may not yet be aware that the Certificate Authority (CA) used to sign the Windows Secure Boot\u00a0Loader\u00a0and the Secure Boot databases is set to expire shortly and must be replaced with a new one. There is a lot of information circulating online about this topic, but most of it is incomplete. Therefore, […]<\/p>","protected":false},"author":1,"featured_media":3551,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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system administrators may not yet be aware that the Certificate Authority (CA) used to sign the Windows Secure Boot\u00a0Loader\u00a0and the Secure Boot databases is set to expire shortly and must be replaced with a new one. There is a lot of information circulating online about this topic, but most of it is incomplete. 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