{"id":18294,"date":"2026-08-11T13:38:21","date_gmt":"2026-08-11T13:38:21","guid":{"rendered":"https:\/\/windowsreport.com\/es\/cisa-confirma-que-una-falla-de-sharepoint-se-utiliza-en-ataques-de-ransomware\/"},"modified":"2026-08-11T13:38:21","modified_gmt":"2026-08-11T13:38:21","slug":"cisa-confirma-que-una-falla-de-sharepoint-se-utiliza-en-ataques-de-ransomware","status":"publish","type":"post","link":"https:\/\/windowsreport.com\/es\/cisa-confirma-que-una-falla-de-sharepoint-se-utiliza-en-ataques-de-ransomware\/","title":{"rendered":"CISA confirma que una falla de SharePoint se utiliza en ataques de ransomware"},"content":{"rendered":"\n<p>CISA ha confirmado que un fallo de Microsoft SharePoint identificado como CVE-2026-45659 se est\u00e1 utilizando ahora en ataques de ransomware.<\/p>\n\n\n\n<p>El mes pasado, CISA advirti\u00f3 que se est\u00e1 explotando un nuevo fallo de SharePoint. La agencia ha vinculado ahora la vulnerabilidad de alta gravedad con campa\u00f1as de ransomware dirigidas a servidores SharePoint vulnerables.<\/p>\n\n\n\n<p>El fallo, identificado como <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>, se considera explotado activamente desde principios de julio. Tambi\u00e9n fue uno de los tres fallos emergentes de SharePoint se\u00f1alados previamente por CISA.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-cve-2026-45659-can-allow-remote-code-execution\">CVE-2026-45659 puede permitir la ejecuci\u00f3n remota de c\u00f3digo<\/h2>\n\n\n\n<p>CVE-2026-45659 afecta a SharePoint Enterprise Server 2016, SharePoint Server 2019 y SharePoint Server Subscription Edition sin parchear.<\/p>\n\n\n\n<p>La vulnerabilidad se origina en una deserializaci\u00f3n insegura y puede permitir a atacantes con pocos privilegios ejecutar c\u00f3digo arbitrario en los servidores afectados.<\/p>\n\n\n\n<p>Microsoft describi\u00f3 previamente la explotaci\u00f3n como de complejidad relativamente baja y afirm\u00f3 que los atacantes necesitan pocos conocimientos previos del sistema objetivo.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-cisa-ordered-federal-agencies-to-patch-the-flaw\">CISA orden\u00f3 a las agencias federales que parchearan el fallo<\/h3>\n\n\n\n<p>CISA a\u00f1adi\u00f3 CVE-2026-45659 a su Cat\u00e1logo de Vulnerabilidades Explotadas Conocidas el 1 de julio y dio a las agencias del Poder Ejecutivo Civil Federal tres d\u00edas para proteger los servidores SharePoint afectados.<\/p>\n\n\n\n<p>La agencia advirti\u00f3 que las vulnerabilidades de este tipo atraen con frecuencia a actores maliciosos y suponen riesgos significativos para las organizaciones federales.<\/p>\n\n\n\n<p>CISA aconsej\u00f3 posteriormente a las organizaciones que instalaran las \u00faltimas actualizaciones de seguridad de Microsoft, confirmaran que los parches se aplicaron correctamente, monitorizaran los servidores SharePoint en busca de signos de compromiso y redujeran los retrasos en la aplicaci\u00f3n de parches.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-hundreds-of-sharepoint-servers-reportedly-remain-vulnerable\">Cientos de servidores SharePoint permanecen vulnerables seg\u00fan los informes<\/h3>\n\n\n\n<p>Seg\u00fan los informes, m\u00e1s de 200 sistemas SharePoint permanecen sin parchear contra CVE-2026-45659, lo que los deja expuestos a posibles ataques.<\/p>\n\n\n\n<p>Microsoft a\u00fan no ha actualizado su propio aviso de CVE para marcar oficialmente la vulnerabilidad como explotada en entornos reales.<\/p>\n\n\n\n<p>Mientras tanto, en otras noticias de seguridad, <a href=\"https:\/\/windowsreport.com\/es\/storm-1175-regresa-con-el-nuevo-ransomware-stormencryptor-y-nuevas-tacticas-de-ataque-advierte-microsoft\/\" target=\"_blank\" rel=\"noopener\">Microsoft advierte del nuevo ransomware StormEncryptor<\/a>.<\/p>\n\n\n\n<p>V\u00eda <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>CISA ha confirmado que un fallo de Microsoft SharePoint identificado como CVE-2026-45659 se est\u00e1 utilizando ahora en ataques de ransomware. El mes pasado, CISA advirti\u00f3 que se est\u00e1 explotando un nuevo fallo de SharePoint. La agencia ha vinculado ahora la vulnerabilidad de alta gravedad con campa\u00f1as de ransomware dirigidas a servidores SharePoint vulnerables. El fallo, [&hellip;]<\/p>\n","protected":false},"author":49,"featured_media":18295,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_enabled_clarity":"","footnotes":""},"categories":[44],"tags":[],"work":[],"class_list":["post-18294","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-resolucion-de-problemas"],"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 confirma que una falla de SharePoint se utiliza en ataques de ransomware - WindowsReport ES (Spanish)<\/title>\n<meta name=\"description\" content=\"CISA confirma que la vulnerabilidad de Microsoft SharePoint CVE-2026-45659 est\u00e1 siendo explotada en ataques de ransomware contra servidores vulnerables\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/windowsreport.com\/es\/cisa-confirma-que-una-falla-de-sharepoint-se-utiliza-en-ataques-de-ransomware\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CISA confirma que una falla de SharePoint se utiliza en ataques de ransomware\" \/>\n<meta property=\"og:description\" content=\"CISA confirma que la vulnerabilidad de Microsoft SharePoint CVE-2026-45659 est\u00e1 siendo explotada en ataques de ransomware contra servidores vulnerables\" \/>\n<meta property=\"og:url\" content=\"https:\/\/windowsreport.com\/es\/cisa-confirma-que-una-falla-de-sharepoint-se-utiliza-en-ataques-de-ransomware\/\" \/>\n<meta property=\"og:site_name\" content=\"WindowsReport ES (Spanish)\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-11T13:38:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/windowsreport.com\/es\/wp-content\/uploads\/sites\/5\/2026\/08\/sharepoint-unpatched-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"801\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Milan Stanojevic\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@MilanStanojev17\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Milan Stanojevic\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/windowsreport.com\\\/es\\\/cisa-confirma-que-una-falla-de-sharepoint-se-utiliza-en-ataques-de-ransomware\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/windowsreport.com\\\/es\\\/cisa-confirma-que-una-falla-de-sharepoint-se-utiliza-en-ataques-de-ransomware\\\/\"},\"author\":{\"name\":\"Milan Stanojevic\",\"@id\":\"https:\\\/\\\/windowsreport.com\\\/es\\\/#\\\/schema\\\/person\\\/e3910b02e4592db47a0eb303765a3a25\"},\"headline\":\"CISA confirma que una falla de SharePoint se utiliza en ataques de ransomware\",\"datePublished\":\"2026-08-11T13:38:21+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/windowsreport.com\\\/es\\\/cisa-confirma-que-una-falla-de-sharepoint-se-utiliza-en-ataques-de-ransomware\\\/\"},\"wordCount\":353,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/windowsreport.com\\\/es\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/windowsreport.com\\\/es\\\/cisa-confirma-que-una-falla-de-sharepoint-se-utiliza-en-ataques-de-ransomware\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/windowsreport.com\\\/es\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2026\\\/08\\\/sharepoint-unpatched-1.jpg\",\"articleSection\":[\"Resoluci\u00f3n de problemas\"],\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/windowsreport.com\\\/es\\\/cisa-confirma-que-una-falla-de-sharepoint-se-utiliza-en-ataques-de-ransomware\\\/#respond\"]}],\"copyrightYear\":\"2026\",\"copyrightHolder\":{\"@id\":\"https:\\\/\\\/windowsreport.com\\\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/windowsreport.com\\\/es\\\/cisa-confirma-que-una-falla-de-sharepoint-se-utiliza-en-ataques-de-ransomware\\\/\",\"url\":\"https:\\\/\\\/windowsreport.com\\\/es\\\/cisa-confirma-que-una-falla-de-sharepoint-se-utiliza-en-ataques-de-ransomware\\\/\",\"name\":\"CISA confirma que una falla de SharePoint se utiliza en ataques de ransomware - 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