{"id":41816,"date":"2026-08-17T02:12:19","date_gmt":"2026-08-17T00:12:19","guid":{"rendered":"https:\/\/www.chinasmartbuy.com\/blog\/macos-screen-sharing-falla-critica-patch-apple\/"},"modified":"2026-08-17T02:12:20","modified_gmt":"2026-08-17T00:12:20","slug":"macos-screen-sharing-falla-critica-patch-apple","status":"publish","type":"post","link":"https:\/\/www.chinasmartbuy.com\/blog\/macos-screen-sharing-falla-critica-patch-apple\/","title":{"rendered":"macOS, falla critica in Screen Sharing gi\u00e0 sfruttata: Apple rilascia la patch"},"content":{"rendered":"\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Bebas+Neue&amp;family=DM+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&amp;display=swap\" rel=\"stylesheet\">\n<style>\n  :root {\n    --red: #CC1B1B;\n    --red-light: rgba(204,27,27,0.08);\n    --red-mid: #e84040;\n    --accent-soft-bg: rgba(204,27,27,0.07);\n    --accent-soft-border: rgba(204,27,27,0.18);\n    --text: #1a1a1a;\n    --text-muted: #666;\n    --card: #ffffff;\n    --border: #ebebeb;\n    --page-bg: #ffffff;\n    --surface-soft: #fafafa;\n    --surface-contrast: #f0f0f0;\n    --line-soft: #f5f5f5;\n    --soft-label: #bbb;\n    --muted-label: #999;\n    --copy: #333;\n    --font-head: 'Bebas Neue', sans-serif;\n    --font-body: 'DM Sans', sans-serif;\n    --heading-spacing: 0.04em;\n    --heading-weight: 400;\n    --spec-header-spacing: 0.08em;\n    --quickfacts-shadow: 0 10px 24px rgba(15,23,42,0.06);\n  }\n  .fbp5-wrap,.fbp5-wrap * { box-sizing:border-box; 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flex-shrink:0; }\n  .rh-downloadbox-note { margin:14px 0 0; font-size:12px; line-height:1.55; color:var(--text-muted); }\n  .rh-offerbox { margin:4px 0 0; }\n  .rh-offerbox-wrap { background:linear-gradient(135deg,var(--accent-soft-bg),#fff); border:1px solid var(--accent-soft-border); border-radius:18px; padding:20px; box-shadow:var(--quickfacts-shadow); }\n  .rh-offerbox-head { display:flex; justify-content:space-between; align-items:flex-start; gap:16px; margin-bottom:14px; }\n  .rh-offerbox-kicker { font-size:11px; font-weight:800; letter-spacing:0.12em; text-transform:uppercase; color:var(--red); margin-bottom:6px; }\n  .rh-offerbox-title { font-family:var(--font-head); font-size:clamp(24px,3.4vw,34px); line-height:1; color:var(--text); letter-spacing:var(--heading-spacing); margin:0; }\n  .rh-offerbox-count { flex-shrink:0; border:1px solid var(--accent-soft-border); background:#fff; color:var(--red); border-radius:999px; padding:6px 10px; font-size:11px; font-weight:800; text-transform:uppercase; }\n  .rh-offerbox-links { display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:10px; }\n  .rh-offerbox-link { display:flex; align-items:center; justify-content:center; gap:8px; background:var(--red); color:#fff !important; text-decoration:none !important; border-radius:999px; padding:11px 16px; font-size:14px; font-weight:800; text-align:center; }\n  .rh-offerbox-link small { opacity:.82; font-size:11px; font-weight:700; }\n  .rh-offerbox-link svg { width:13px; height:13px; flex-shrink:0; }\n  .rh-offerbox-note { margin:14px 0 0; font-size:12px; line-height:1.55; color:var(--text-muted); }\n  .rh-offer-inline { margin:0; }\n  .rh-offer-inline-wrap { display:flex; align-items:center; justify-content:space-between; gap:16px; background:var(--surface-soft); border:1px solid var(--accent-soft-border); border-left:4px solid var(--red); border-radius:16px; padding:16px 18px; box-shadow:var(--quickfacts-shadow); }\n  .rh-offer-inline-kicker { font-size:10px; font-weight:800; letter-spacing:0.12em; text-transform:uppercase; color:var(--red); margin-bottom:4px; }\n  .rh-offer-inline-title { font-size:15px; line-height:1.35; color:var(--text); font-weight:800; }\n  .rh-offer-inline-store { margin-top:3px; font-size:12px; color:var(--text-muted); font-weight:700; }\n  .rh-offer-inline-cta { display:inline-flex; align-items:center; justify-content:center; gap:8px; flex-shrink:0; background:var(--red); color:#fff !important; text-decoration:none !important; border-radius:999px; padding:11px 16px; font-size:13px; font-weight:800; white-space:nowrap; }\n  .rh-offer-inline-cta svg { width:13px; height:13px; flex-shrink:0; }\n  .rh-offer-inline-note { margin:9px 0 0; font-size:12px; line-height:1.55; color:var(--text-muted); }\n  .rh-external-embed { margin:4px 0 0; }\n  .rh-external-embed-wrap { width:100%; background:#fff; border:1px solid var(--border); border-radius:16px; overflow:hidden; box-shadow:var(--quickfacts-shadow); }\n  .rh-external-embed-head { display:flex; align-items:center; justify-content:space-between; gap:12px; padding:14px 18px; background:var(--surface-soft); border-bottom:1px solid var(--border); }\n  .rh-external-embed-kicker { font-size:11px; font-weight:700; letter-spacing:0.08em; text-transform:uppercase; color:var(--red); }\n  .rh-external-embed-source { font-size:12px; color:var(--soft-label); }\n  .rh-external-embed-frame { position:relative; aspect-ratio:16 \/ 9; overflow:hidden; background:#000; min-height:0; }\n  .rh-external-embed-frame iframe, .rh-external-embed-frame > iframe { position:absolute !important; inset:0; width:100% !important; height:100% !important; min-height:0 !important; max-height:none !important; max-width:none !important; border:0; display:block; }\n  .rh-external-embed-body { padding:18px 20px; display:grid; gap:12px; }\n  .rh-external-embed-title { font-family:var(--font-head); font-size:24px; line-height:1; color:var(--text); letter-spacing:0.02em; }\n  .rh-external-embed-copy { font-size:14px; 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margin-bottom:14px; }\n  .fbp5-bullet-list { margin:18px 0 6px 20px; padding:0; display:flex; flex-direction:column; gap:10px; }\n  .fbp5-bullet-list li { font-size:16px; line-height:1.7; color:#1f2937; }\n  .fbp5-bullet-list li::marker { color:var(--red); }\n  .rh-quickfacts-grid { margin:18px 0 0; display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:12px; }\n  .rh-quickfacts-card { background:#fff; border:1px solid var(--border); border-radius:16px; padding:14px 16px; box-shadow:var(--quickfacts-shadow); display:flex; flex-direction:column; gap:6px; }\n  .rh-quickfacts-label { font-size:12px; font-weight:800; letter-spacing:0.08em; text-transform:uppercase; color:var(--red); }\n  .rh-quickfacts-value { font-size:15px; line-height:1.6; color:#1f2937; }\n  .fbp5-highlight { background:var(--red-light); border-left:4px solid var(--red); border-radius:0 10px 10px 0; padding:15px 19px; margin:18px 0 0; font-size:16px; color:var(--copy); line-height:1.65; }\n  .fbp5-info { background:var(--surface-soft); border:1px solid var(--border); border-radius:10px; padding:15px 19px; margin:18px 0 0; font-size:15px; color:var(--text-muted); line-height:1.65; }\n  .fbp5-scheda { background:var(--card); border:1px solid var(--border); border-radius:14px; overflow:hidden; margin:20px 0 0; }\n  .fbp5-scheda-header { background:var(--red); color:#fff; padding:14px 20px; font-family:var(--font-head); font-size:20px; font-weight:var(--heading-weight); letter-spacing:var(--spec-header-spacing); }\n  .fbp5-scheda-row { display:flex; border-bottom:1px solid var(--border); }\n  .fbp5-scheda-row:last-child { border-bottom:none; }\n  .fbp5-scheda-key { width:42%; padding:11px 16px; font-size:13px; font-weight:700; color:var(--text-muted); text-transform:uppercase; letter-spacing:0.06em; background:var(--surface-soft); flex-shrink:0; }\n  .fbp5-scheda-val { padding:11px 16px; font-size:14px; color:var(--text); font-weight:500; line-height:1.5; }\n  @media(max-width:600px) {\n    .fbp5-wrap { padding:0 14px 60px; gap:40px; }\n    .fbp5-section h2 { font-size:32px; }\n    .fbp5-scheda-row { flex-direction:column; }\n    .fbp5-scheda-key { width:100%; }\n    .rh-phonebox-header { padding:18px 16px; flex-direction:column; align-items:center; }\n    .rh-phonebox-hero { width:150px; height:200px; }\n    .rh-phonebox-highlights { grid-template-columns:repeat(2,minmax(0,1fr)); }\n    .rh-phonebox-colors { padding:16px; }\n    .rh-phonebox-section { grid-template-columns:1fr; }\n    .rh-phonebox-section-label { padding:14px 20px; border-right:none; border-bottom:1px solid var(--border); }\n    .rh-phonebox-section-values { padding:14px 20px; }\n    .rh-affbox-grid { grid-template-columns:1fr; }\n    .rh-affbox-col:not(:last-child) { border-right:none; border-bottom:1px solid var(--line-soft); }\n    .rh-affbox-cta { width:100%; }\n    .rh-downloadjump { align-items:flex-start; flex-direction:column; margin:-22px 0 0; }\n    .rh-downloadjump a { width:100%; }\n    .rh-downloadbox-head { flex-direction:column; }\n    .rh-downloadbox-link { width:100%; }\n    .rh-offerbox-head { flex-direction:column; }\n    .rh-offerbox-links { grid-template-columns:1fr; }\n    .rh-offer-inline-wrap { flex-direction:column; align-items:flex-start; }\n    .rh-offer-inline-cta { width:100%; }\n  }\n\n  \/* RH_FBP5_CARDS_CSS_V1 *\/\n  .fbp5-related-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }\n  .fbp5-telegram-grid { grid-template-columns:repeat(2,1fr); }\n  .fbp5-related-card { display:block; overflow:hidden; border:1px solid var(--border,#ebebeb); border-radius:8px; background:var(--card,#fff); color:inherit !important; text-decoration:none !important; transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease; }\n  .fbp5-related-card:hover { transform:translateY(-2px); border-color:rgba(204,27,27,.35); box-shadow:0 16px 36px rgba(18,18,18,.10); }\n  .fbp5-related-card img { display:block; width:100%; aspect-ratio:16\/9; object-fit:cover; background:var(--surface-soft,#fafafa); }\n  .fbp5-related-thumb-placeholder { width:100%; aspect-ratio:16\/9; display:flex; align-items:center; justify-content:center; background:linear-gradient(135deg,rgba(204,27,27,.10),rgba(204,27,27,.03)); color:var(--red,#CC1B1B); font-family:var(--font-head,'Bebas Neue',sans-serif); font-size:28px; letter-spacing:.04em; }\n  .fbp5-related-body { padding:12px; }\n  .fbp5-related-body span { display:block; margin:0 0 6px; color:var(--red,#CC1B1B); font-size:11px; font-weight:900; letter-spacing:.08em; text-transform:uppercase; }\n  .fbp5-related-body strong { display:block; font-size:15px; line-height:1.25; color:var(--text,#1a1a1a); }\n  .fbp5-related-body small { display:block; margin:7px 0 0; color:var(--text-muted,#666); font-size:13px; line-height:1.35; }\n  @media(max-width:720px) {\n    .fbp5-telegram-grid { grid-template-columns:1fr; }\n    .fbp5-related-grid:not(.fbp5-telegram-grid) { grid-template-columns:1fr; }\n    .fbp5-related-grid:not(.fbp5-telegram-grid) .fbp5-related-card { display:grid; grid-template-columns:112px minmax(0,1fr); align-items:stretch; }\n    .fbp5-related-grid:not(.fbp5-telegram-grid) .fbp5-related-card img,\n    .fbp5-related-grid:not(.fbp5-telegram-grid) .fbp5-related-thumb-placeholder { height:100%; min-height:92px; aspect-ratio:auto; }\n  }\n<\/style>\n<div class=\"fbp5-wrap rh-json-article\" id=\"rh-article-mswhbmv5-epn0n\" data-rh-article-type=\"news\" data-rh-site-profile=\"china-smart-buy\">\n  <div class=\"fbp5-intro\">\n    \n    <p>Apple ha corretto con un aggiornamento urgente una falla grave di macOS che sta gi\u00e0 venendo sfruttata contro i Mac esposti direttamente su Internet. Il problema riguarda la funzione <strong>Screen Sharing<\/strong>, il servizio di desktop remoto integrato nel sistema, e consente agli attaccanti di aggirare l\u2019autenticazione fino a ottenere privilegi root.<\/p><p>Nei casi osservati, i sistemi compromessi sono stati usati per installare un miner di <strong>Monero<\/strong>, segnale chiaro di attacchi automatizzati rivolti ai dispositivi raggiungibili sulla porta TCP 5900. Per chi non pu\u00f2 aggiornare subito, la misura pi\u00f9 immediata \u00e8 disattivare Screen Sharing dalle impostazioni di condivisione di macOS.<\/p>\n  <\/div><figure class=\"wp-block-image size-large\" style=\"margin:18px 0;display:block;clear:both;width:100%;position:relative;z-index:1\"><a href=\"https:\/\/www.chinasmartbuy.com\/blog\/wp-content\/uploads\/2026\/08\/macos-falla-critica-in-screen-sharing-gi-sfruttata-4ec05966-f768-4741-a64c-410a-1nxoeruzp6.webp\" target=\"_blank\" rel=\"noopener\" style=\"display:block;width:100%;position:relative;z-index:2;pointer-events:auto;cursor:zoom-in\"><img decoding=\"async\" src=\"https:\/\/www.chinasmartbuy.com\/blog\/wp-content\/uploads\/2026\/08\/macos-falla-critica-in-screen-sharing-gi-sfruttata-4ec05966-f768-4741-a64c-410a-1nxoeruzp6.webp\" alt=\"\u82f9\u679c macOS \u5c4f\u5e55\u5171\u4eab\u9ad8\u5371\u6f0f\u6d1e\u5df2\u906d\u9ed1\u5ba2\u5229\u7528\uff0c\u653b\u51fb\u8005\u53ef\u8fdc\u7a0b\u83b7\u53d6 Root \u6743\u9650\" loading=\"lazy\" style=\"display:block;max-width:100%;height:auto;margin:0 auto;pointer-events:auto\"><\/a><\/figure>\n  \n\n      <section class=\"fbp5-section\">\n        <div class=\"fbp5-section-label\">Sicurezza<\/div>\n        <h2>La vulnerabilit\u00e0 di Screen Sharing consente accesso remoto <span>completo al Mac<\/span><\/h2>\n        <p>La falla \u00e8 identificata come <strong>CVE-2026-65400<\/strong> e interessa il meccanismo di autenticazione del servizio Screen Sharing, basato su VNC. In pratica, un attaccante in rete pu\u00f2 riuscire a superare il controllo delle credenziali e prendere il controllo del Mac senza disporre di un accesso valido, a patto che la funzione sia attiva e raggiungibile dall\u2019esterno.<\/p><p>L\u2019impatto \u00e8 particolarmente serio perch\u00e9 negli incidenti gi\u00e0 rilevati gli aggressori hanno ottenuto permessi root, ci\u00f2\u00e8 il livello massimo di controllo sul sistema. Questo apre la strada non solo all\u2019installazione di software malevolo, ma anche alla compromissione completa di riservatezza, integrit\u00e0 e disponibilit\u00e0 del dispositivo.<\/p>\n        \n        \n        \n        \n        \n      <\/section>\n    \n\n      <section class=\"fbp5-section\">\n        <div class=\"fbp5-section-label\">Aggiornamenti<\/div>\n        <h2>Apple ha gi\u00e0 distribuito la patch per Tahoe <span>Sequoia e Sonoma<\/span><\/h2>\n        <p>Apple ha corretto il problema con un aggiornamento straordinario rilasciato il 6 agosto, disponibile per <strong>macOS Tahoe 26.6. 1<\/strong>, <strong>macOS Sequoia 15.7. 9<\/strong> e <strong>macOS Sonoma 14.8. 9<\/strong>. La correzione interviene sulla gestione dello stato durante il processo di autenticazione, il punto debole sfruttato negli attacchi.<\/p><p>La gravit\u00e0 attribuita alla vulnerabilit\u00e0 \u00e8 poi salita sensibilmente. L\u2019ente statunitense CISA ha aggiornato il punteggio CVSS da 7,1 a <strong>9,8 su 10<\/strong>, classificandolo come caso critico e ritenendo possibile anche lo sfruttamento automatizzato. \u00c8 un dettaglio importante perch\u00e9 indica un rischio concreto di campagne su larga scala contro Mac lasciati esposti e non presidiati.<\/p>\n        \n        \n        \n        \n        \n      <\/section>\n    \n\n      <section class=\"fbp5-section\">\n        <div class=\"fbp5-section-label\">Protezione<\/div>\n        <h2>Cosa fare subito se il Mac usa la <span>condivisione schermo<\/span><\/h2>\n        <p>La priorit\u00e0 \u00e8 installare l\u2019ultima versione disponibile di macOS tra quelle supportate dal proprio Mac. Chi usa il desktop remoto integrato dovrebbe anche verificare se il servizio sia realmente necessario e, soprattutto, se il computer sia accessibile da Internet tramite la porta 5900.<\/p><p>Se l\u2019aggiornamento non \u00e8 immediatamente possibile, conviene spegnere temporaneamente la funzione seguendo il percorso Sistema, Generali, Condivisione. Il fatto che Apple sia intervenuta con una patch dedicata a un singolo CVE, a pochi giorni dal precedente ciclo di sicurezza, mostra quanto la questione sia stata considerata prioritaria anche internamente.<\/p>\n        \n        \n        \n        \n        \n      <\/section>\n    \n<section class=\"fbp5-section\" data-rh-related-section=\"1\">\n      <div class=\"fbp5-section-label\">Articoli correlati<\/div>\n      <h2>Altre notizie <span>da leggere<\/span><\/h2>\n      <div class=\"fbp5-related-grid\"><a class=\"fbp5-related-card\" href=\"https:\/\/www.chinasmartbuy.com\/blog\/apple-macos-26-6-2-rilascio-ufficiale-mac\" target=\"_blank\" rel=\"noopener\">\n      <img decoding=\"async\" src=\"https:\/\/www.chinasmartbuy.com\/blog\/wp-content\/uploads\/2026\/08\/apple-rilascia-macos-26-6-2-a7f18aa0-8a31-4d67-965a-febb-pyikss1og4.jpg\" alt=\"Apple rilascia macOS 26.6.2: nuova build stabile per Mac\" loading=\"lazy\">\n      <div class=\"fbp5-related-body\">\n        <span>apple<\/span>\n        <strong>Apple rilascia macOS 26.6.2: nuova build stabile per Mac<\/strong>\n        <small>Apple ha rilasciato macOS 26. 6. 2 per i Mac con build 25G82. Ecco cosa sappiamo sulla nuova versione stabile e sul&#8230;<\/small>\n      <\/div>\n    <\/a><a class=\"fbp5-related-card\" href=\"https:\/\/www.chinasmartbuy.com\/blog\/apple-watch-redesign-schermo-rotondo-wearable-senza-display\" target=\"_blank\" rel=\"noopener\">\n      <img decoding=\"async\" src=\"https:\/\/www.chinasmartbuy.com\/blog\/wp-content\/uploads\/2026\/08\/apple-watch-apple-watch-lineup-hy5v9rb7fz.webp\" alt=\"Apple Watch, Apple prepara una svolta tra design nuovi e wearable senza schermo\" loading=\"lazy\">\n      <div class=\"fbp5-related-body\">\n        <span>apple<\/span>\n        <strong>Apple Watch, Apple prepara una svolta tra design nuovi e wearable senza schermo<\/strong>\n        <small>Apple starebbe studiando un profondo ripensamento della gamma Watch, tra schermi rotondi, wearable senza display e&#8230;<\/small>\n      <\/div>\n    <\/a><a class=\"fbp5-related-card\" href=\"https:\/\/www.chinasmartbuy.com\/blog\/apple-ios-ipados-18-7-10-rilascio-ufficiale\" target=\"_blank\" rel=\"noopener\">\n      <img decoding=\"async\" src=\"https:\/\/www.chinasmartbuy.com\/blog\/wp-content\/uploads\/2026\/04\/ipad-air-con-display-oled-in-arrivo-1.jpg\" alt=\"Apple rilascia iOS 18.7.10 e iPadOS 18.7.10: disponibile la build 22H373\" loading=\"lazy\">\n      <div class=\"fbp5-related-body\">\n        <span>apple<\/span>\n        <strong>Apple rilascia iOS 18.7.10 e iPadOS 18.7.10: disponibile la build 22H373<\/strong>\n        <small>Apple ha rilasciato iOS 18. 7. 10 e iPadOS 18. 7. 10 con build 22H373, ma senza dettagli ufficiali sulle correzioni&#8230;<\/small>\n      <\/div>\n    <\/a><\/div>\n    <\/section><div class=\"rh-attribution-pills\" style=\"display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-start;margin:16px 0 0\"><a href=\"https:\/\/www.ithome.com\/0\/990\/429.htm\" target=\"_blank\" rel=\"noopener\" title=\"Via: VIA\" aria-label=\"Via: VIA\" style=\"display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:16px;background:linear-gradient(135deg,#fff7ed,#ffedd5);color:#c2410c;text-decoration:none;font-size:11px;font-weight:900;letter-spacing:.08em;text-transform:uppercase;border:1px solid rgba(249,115,22,.20);box-shadow:0 8px 22px rgba(249,115,22,.08)\">Via<\/a><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Apple ha corretto una falla critica di macOS Screen Sharing gi\u00e0 sfruttata per ottenere accesso root ai Mac esposti su Internet.<\/p>\n","protected":false},"author":15,"featured_media":41815,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_yoast_wpseo_focuskw_text_input":"vulnerabilit\u00e0 macOS Screen Sharing","footnotes":""},"categories":[480],"tags":[913],"class_list":["post-41816","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-apple"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>macOS, falla critica in Screen Sharing gi\u00e0 sfruttata: Apple rilascia la patch<\/title>\n<meta name=\"description\" content=\"Una vulnerabilit\u00e0 critica di macOS Screen Sharing \u00e8 gi\u00e0 sfruttata per ottenere accesso root ai Mac esposti online. 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