{"id":25540,"date":"2026-08-11T13:27:59","date_gmt":"2026-08-11T13:27:59","guid":{"rendered":"https:\/\/windowsreport.com\/fr\/cisa-confirme-quune-faille-sharepoint-est-utilisee-dans-des-attaques-par-ransomware\/"},"modified":"2026-08-11T13:27:59","modified_gmt":"2026-08-11T13:27:59","slug":"cisa-confirme-quune-faille-sharepoint-est-utilisee-dans-des-attaques-par-ransomware","status":"publish","type":"post","link":"https:\/\/windowsreport.com\/fr\/cisa-confirme-quune-faille-sharepoint-est-utilisee-dans-des-attaques-par-ransomware\/","title":{"rendered":"CISA confirme qu\u2019une faille SharePoint est utilis\u00e9e dans des attaques par ransomware"},"content":{"rendered":"\n<p>La CISA a confirm\u00e9 qu\u2019une faille de Microsoft SharePoint, identifi\u00e9e sous le code CVE-2026-45659, est d\u00e9sormais utilis\u00e9e dans des attaques par ran\u00e7ongiciel.<\/p>\n\n\n\n<p>Le mois dernier, la CISA a averti qu\u2019une nouvelle faille SharePoint est exploit\u00e9e. L\u2019agence a d\u00e9sormais reli\u00e9 cette vuln\u00e9rabilit\u00e9 de gravit\u00e9 \u00e9lev\u00e9e \u00e0 des campagnes de ran\u00e7ongiciel ciblant les serveurs SharePoint vuln\u00e9rables.<\/p>\n\n\n\n<p>La faille, identifi\u00e9e sous le code <a href=\"https:\/\/www.cisa.gov\/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45659#:~:text=Known%20To%20Be%20Used%20in%20Ransomware%20Campaigns%3F%20Known\" target=\"_blank\" rel=\"noopener\">CVE-2026-45659<\/a>, est consid\u00e9r\u00e9e comme activement exploit\u00e9e depuis d\u00e9but juillet. Elle faisait \u00e9galement partie des trois failles SharePoint \u00e9mergentes pr\u00e9c\u00e9demment signal\u00e9es par la CISA.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-cve-2026-45659-can-allow-remote-code-execution\">CVE-2026-45659 peut permettre l\u2019ex\u00e9cution de code \u00e0 distance<\/h2>\n\n\n\n<p>CVE-2026-45659 affecte les versions non corrig\u00e9es de SharePoint Enterprise Server 2016, SharePoint Server 2019 et SharePoint Server Subscription Edition.<\/p>\n\n\n\n<p>La vuln\u00e9rabilit\u00e9 provient d\u2019une d\u00e9s\u00e9rialisation non s\u00e9curis\u00e9e et peut permettre \u00e0 des attaquants disposant de faibles privil\u00e8ges d\u2019ex\u00e9cuter du code arbitraire sur les serveurs affect\u00e9s.<\/p>\n\n\n\n<p>Microsoft a pr\u00e9c\u00e9demment d\u00e9crit cette exploitation comme \u00e9tant d\u2019une complexit\u00e9 relativement faible, et a indiqu\u00e9 que les attaquants n\u2019ont besoin que de peu de connaissances pr\u00e9alables du syst\u00e8me cibl\u00e9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-cisa-ordered-federal-agencies-to-patch-the-flaw\">La CISA a ordonn\u00e9 aux agences f\u00e9d\u00e9rales de corriger la faille<\/h3>\n\n\n\n<p>La CISA a ajout\u00e9 CVE-2026-45659 \u00e0 son Known Exploited Vulnerabilities Catalog le 1<sup>er<\/sup> juillet, et a accord\u00e9 aux agences de la branche ex\u00e9cutive civile f\u00e9d\u00e9rale un d\u00e9lai de trois jours pour s\u00e9curiser les serveurs SharePoint concern\u00e9s.<\/p>\n\n\n\n<p>L\u2019agence a averti que les vuln\u00e9rabilit\u00e9s de ce type attirent fr\u00e9quemment les acteurs malveillants et pr\u00e9sentent des risques importants pour les organisations f\u00e9d\u00e9rales.<\/p>\n\n\n\n<p>La CISA a par la suite conseill\u00e9 aux organisations d\u2019installer les derni\u00e8res mises \u00e0 jour de s\u00e9curit\u00e9 de Microsoft, de v\u00e9rifier que les correctifs ont \u00e9t\u00e9 appliqu\u00e9s avec succ\u00e8s, de surveiller les serveurs SharePoint \u00e0 la recherche de signes de compromission et de r\u00e9duire les d\u00e9lais d\u2019application des correctifs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-hundreds-of-sharepoint-servers-reportedly-remain-vulnerable\">Des centaines de serveurs SharePoint resteraient vuln\u00e9rables<\/h3>\n\n\n\n<p>Plus de 200 syst\u00e8mes SharePoint resteraient non corrig\u00e9s face \u00e0 CVE-2026-45659, les laissant expos\u00e9s \u00e0 d\u2019\u00e9ventuelles attaques.<\/p>\n\n\n\n<p>Microsoft n\u2019a pas encore mis \u00e0 jour son propre avis CVE pour signaler officiellement la vuln\u00e9rabilit\u00e9 comme \u00e9tant exploit\u00e9e dans la nature.<\/p>\n\n\n\n<p>Parall\u00e8lement, dans l\u2019actualit\u00e9 de la s\u00e9curit\u00e9, <a href=\"https:\/\/windowsreport.com\/fr\/storm-1175-revient-avec-le-nouveau-rancongiciel-stormencryptor-et-de-nouvelles-tactiques-dattaque-previent-microsoft\/\" target=\"_blank\" rel=\"noopener\">Microsoft met en garde contre le nouveau ran\u00e7ongiciel StormEncryptor<\/a>.<\/p>\n\n\n\n<p>Via <a href=\"https:\/\/www.bleepingcomputer.com\/news\/security\/cisa-microsoft-sharepoint-flaw-now-exploited-in-ransomware-attacks\/\" target=\"_blank\" rel=\"noopener\">BleepingComputer<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La CISA a confirm\u00e9 qu\u2019une faille de Microsoft SharePoint, identifi\u00e9e sous le code CVE-2026-45659, est d\u00e9sormais utilis\u00e9e dans des attaques par ran\u00e7ongiciel. Le mois dernier, la CISA a averti qu\u2019une nouvelle faille SharePoint est exploit\u00e9e. L\u2019agence a d\u00e9sormais reli\u00e9 cette vuln\u00e9rabilit\u00e9 de gravit\u00e9 \u00e9lev\u00e9e \u00e0 des campagnes de ran\u00e7ongiciel ciblant les serveurs SharePoint vuln\u00e9rables. La [&hellip;]<\/p>\n","protected":false},"author":49,"featured_media":25541,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_enabled_clarity":"","footnotes":""},"categories":[1019],"tags":[],"work":[],"class_list":["post-25540","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutoriels"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.2 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>CISA confirme qu\u2019une faille SharePoint est utilis\u00e9e dans des attaques par ransomware<\/title>\n<meta name=\"description\" content=\"CISA confirme que la faille Microsoft SharePoint CVE-2026-45659 est d\u00e9sormais exploit\u00e9e dans des attaques par ran\u00e7ongiciel contre des serveurs vuln\u00e9rables\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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