{"id":13726,"date":"2026-04-17T08:27:36","date_gmt":"2026-04-17T06:27:36","guid":{"rendered":"https:\/\/www.infordisa.com\/soc\/?p=13726"},"modified":"2026-04-17T08:44:07","modified_gmt":"2026-04-17T06:44:07","slug":"zero-day-sharepoint","status":"publish","type":"post","link":"https:\/\/www.infordisa.com\/soc\/ca\/zero-day-sharepoint\/","title":{"rendered":"Zero-day a SharePoint i 169 vulnerabilitats corregides per Microsoft"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"13726\" class=\"elementor elementor-13726\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6d5733e1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6d5733e1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ffc68c5\" data-id=\"ffc68c5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-33acfb02 elementor-widget elementor-widget-shortcode\" data-id=\"33acfb02\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\"><span style=\"color: #c02b23;font-weight: bold\">Cr&iacute;tica <\/span><img loading=\"lazy\" decoding=\"async\" width=\"10\" height=\"10\" src=\"https:\/\/www.infordisa.com\/soc\/imgs\/alerta-5.png\" alt=\"Alerta 5\"\/><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1d236e13 elementor-widget elementor-widget-text-editor\" data-id=\"1d236e13\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div><strong><a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2026-32201\" target=\"_blank\" rel=\"noopener\">CVE-2026-32201<\/a><\/strong><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5771d3ce elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"5771d3ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2b24fff elementor-toc--content-ellipsis elementor-toc--minimized-on-mobile elementor-widget elementor-widget-table-of-contents\" data-id=\"2b24fff\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings='{\"headings_by_tags\":[\"h2\",\"h3\"],\"exclude_headings_by_selector\":[],\"marker_view\":\"bullets\",\"icon\":{\"value\":\"fas fa-chevron-right\",\"library\":\"fa-solid\"},\"no_headings_message\":\"No se ha encontrado ning\\u00fan encabezado en esta p\\u00e1gina.\",\"minimized_on\":\"mobile\",\"minimize_box\":\"yes\",\"hierarchical_view\":\"yes\",\"min_height\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"min_height_tablet\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]},\"min_height_mobile\":{\"unit\":\"px\",\"size\":\"\",\"sizes\":[]}}' data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTabla de contenidos\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__2b24fff\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-down\"><\/i><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__2b24fff\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><i aria-hidden=\"true\" class=\"fas fa-chevron-up\"><\/i><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__2b24fff\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<i class=\"elementor-toc__spinner eicon-animation-spin eicon-loading\" aria-hidden=\"true\"><\/i>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-514d094 elementor-widget elementor-widget-text-editor\" data-id=\"514d094\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Descripci&oacute;n<\/h2><p>Microsoft ha publicado su actualizaci&oacute;n mensual de seguridad (Patch Tuesday de abril de 2026), corrigiendo un total de <strong>169 vulnerabilidades<\/strong> que afectan a m&uacute;ltiples productos de su ecosistema, incluyendo Windows, Microsoft Defender, Office y servicios de red.<\/p><p>Entre ellas destaca una <strong><a class=\"glossaryLink\" href=\"https:\/\/www.infordisa.com\/soc\/ca\/glosario-definicion\/vulnerabilidad\/\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">vulnerabilidad<\/a> <a class=\"glossaryLink\"  href=\"https:\/\/www.infordisa.com\/soc\/ca\/glosario-definicion\/zero-day\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>zero-day<\/a> (<a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2026-32201\" target=\"_blank\" rel=\"noopener\">CVE-2026-32201<\/a>) en Microsoft SharePoint Server<\/strong>, que ya est&aacute; siendo explotada activamente.<\/p><p>Este ciclo de parches es uno de los m&aacute;s relevantes del a&ntilde;o tanto por el volumen como por la criticidad de los fallos corregidos.<\/p><h2>Riesgo<\/h2><p>La vulnerabilidad <strong><a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2026-32201\" target=\"_blank\" rel=\"noopener\">CVE-2026-32201<\/a><\/strong> permite a un atacante:<\/p><ul><li>Suplantar identidad (<a class=\"glossaryLink\"  href=\"https:\/\/www.infordisa.com\/soc\/ca\/glosario-definicion\/spoofing\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>spoofing<\/a>)<\/li><li>Manipular informaci&oacute;n en SharePoint<\/li><li>Acceder a datos sensibles<\/li><\/ul><p>Al tratarse de un <strong>zero-day en explotaci&oacute;n activa, el riesgo es CR&Iacute;TICO<\/strong>, especialmente en entornos con SharePoint expuesto o accesible desde Internet.<\/p><p>Adem&aacute;s, se han identificado otras vulnerabilidades relevantes:<\/p><ul><li><strong><a class=\"glossaryLink\"  href=\"https:\/\/www.infordisa.com\/soc\/ca\/glosario-definicion\/cve\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>CVE<\/a>-2026-33824<\/strong> &rarr; Ejecuci&oacute;n remota de c&oacute;digo (RCE) en servicio IKE (CVSS 9.8)<\/li><li><strong>CVE-2026-33825<\/strong> &rarr; Elevaci&oacute;n de privilegios en Microsoft Defender<\/li><li>M&uacute;ltiples fallos en Windows, Office, Active Directory y servicios de red<\/li><\/ul><p>Esto puede facilitar:<\/p><ul><li>Compromiso total de sistemas<\/li><li>Movimiento lateral en la red<\/li><li>Robo de credenciales<\/li><li>Ataques a <a class=\"glossaryLink\"  href=\"https:\/\/www.infordisa.com\/soc\/ca\/glosario-definicion\/vpn\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>VPN<\/a> y entornos corporativos<\/li><\/ul><h2>Sistemas afectados<\/h2><ul><li>Microsoft SharePoint Server<\/li><li>Sistemas Windows (especialmente servicios de red y VPN)<\/li><li>Microsoft Defender<\/li><li>Microsoft Office (Word, Excel)<\/li><li>Infraestructuras con Active Directory<\/li><\/ul><h2>Recomendaciones<\/h2><p>Desde el SOC se recomienda actuar de forma inmediata:<\/p><h3>1. Aplicaci&oacute;n urgente de parches<\/h3><p style=\"padding-left: 40px;\">Priorizar servidores SharePoint<br>Actualizar sistemas Windows y Defender<\/p><h3>2. Revisi&oacute;n de exposici&oacute;n<\/h3><p style=\"padding-left: 40px;\">Verificar si SharePoint est&aacute; accesible desde Internet<br>Limitar accesos externos y aplicar controles adicionales<\/p><h3>3. Refuerzo de seguridad<\/h3><p style=\"padding-left: 40px;\">Segmentar la red<br>Revisar privilegios de cuentas cr&iacute;ticas<br>Asegurar actualizaciones autom&aacute;ticas activas<\/p><h3>4. Monitorizaci&oacute;n<\/h3><p style=\"padding-left: 40px;\">Analizar logs en busca de actividad sospechosa<br>Revisar accesos y cambios en SharePoint<br>Detectar posibles movimientos laterales<\/p><h3>5. Protecci&oacute;n de VPN<\/h3><p style=\"padding-left: 40px;\">Revisar configuraciones del servicio IKE<br>Aplicar parches en sistemas expuestos<\/p><p>La explotaci&oacute;n activa de un zero-day en SharePoint junto con el elevado n&uacute;mero de vulnerabilidades corregidas convierte este Patch Tuesday en cr&iacute;tico para cualquier organizaci&oacute;n.<\/p><p>Una gesti&oacute;n &aacute;gil de parches y una correcta monitorizaci&oacute;n son claves para evitar compromisos de seguridad en entornos Microsoft.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p><a class=\"glossaryLink\"  href=\"https:\/\/www.infordisa.com\/soc\/ca\/glosario-definicion\/cve\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>CVE<\/a>-2026-32201 debe tratarse como CR&Iacute;TICA independientemente de su CVSS, debido a su explotaci&oacute;n en curso y su impacto potencial en entornos corporativos.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[4],"tags":[78,62,225,147],"class_list":["post-13726","post","type-post","status-publish","format-standard","hentry","category-alertas-de-seguridad","tag-0-day","tag-microsoft","tag-sharepoint","tag-vulnerabilidad","masonry-post","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-25"],"acf":[],"yoast_head":"<title>Zero-day en SharePoint y 169 vulnerabilidades corregidas por Microsoft - 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