{"id":79352,"date":"2025-09-29T12:51:42","date_gmt":"2025-09-29T12:51:42","guid":{"rendered":""},"modified":"2025-11-04T00:37:13","modified_gmt":"2025-11-04T06:37:13","slug":"cve-2025-50170-privilege-escalation-vulnerability-in-windows-cloud-files-mini-filter-driver","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-50170-privilege-escalation-vulnerability-in-windows-cloud-files-mini-filter-driver\/","title":{"rendered":"<strong>CVE-2025-50170: Privilege Escalation Vulnerability in Windows Cloud Files Mini Filter Driver<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In today&#8217;s cybersecurity landscape, one of the most critical concerns is the improper handling of insufficient permissions or privileges. A particularly concerning example of this is the recently identified vulnerability with the identifier CVE-2025-50170. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-57148-arbitrary-file-upload-vulnerability-in-phpgurukul-online-shopping-portal-2-0\/\"  data-wpil-monitor-id=\"86570\">vulnerability exists in the Windows Cloud Files<\/a> Mini Filter Driver and allows an authorized attacker to elevate privileges locally. This can lead to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-26210-deepseek-xss-vulnerability-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"86655\">potential system<\/a> compromise or data leakage, making it a significant risk to any organization using affected versions of the product. Understanding and mitigating this risk is crucial for maintaining the integrity and security of our digital environments.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-50170<br \/>\nSeverity: High (7.8)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: Required<br \/>\nImpact: Local <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48543-privilege-escalation-vulnerability-in-android-s-chrome-sandbox\/\"  data-wpil-monitor-id=\"86914\">Privilege Escalation<\/a> leading to potential system compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2048684081\" class=\"ameeb-content-2 ameeb-entity-placement\"><div style=\"border-left: 4px solid #555; padding-left: 20px; margin: 48px 0; font-family: Roboto, sans-serif; color: #ffffff; line-height: 1.6; max-width: 700px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 20px; font-weight: 600; display: flex; align-items: center;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 8px;\">\r\n      <img decoding=\"async\" src=\"https:\/\/www.ameeba.com\/blog\/wp-content\/uploads\/2025\/10\/Best-App-icon-Ameeba.png\" alt=\"Ameeba Chat Icon\" style=\"width: 40px; height: 40px;\" \/>\r\n    <\/a>\r\n    A new way to communicate\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 12px;\">\r\n    Ameeba Chat is built on encrypted identity, not personal profiles.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 16px;\">\r\n    Message, call, share files, and coordinate with identities kept separate.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 20px;\">\r\n    <li>\u2022 Encrypted identity<\/li>\r\n    <li>\u2022 Ameeba Chat authenticates access<\/li>\r\n    <li>\u2022 Aliases and categories<\/li>\r\n    <li>\u2022 End-to-end encrypted chat, calls, and files<\/li>\r\n    <li>\u2022 Secure notes for sensitive information<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px;\">\r\n    Private communication, rethought.\r\n  <\/p>\r\n\r\n  <div style=\"display: flex; flex-wrap: wrap; gap: 12px;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\/download\" style=\"background-color: #ffffff; color: #000000; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Download Ameeba Chat<\/a>\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Learn More<\/a>\r\n  <\/div>\r\n<\/div>\r\n<\/div>\n<p>Product | Affected Versions<\/p>\n<p><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32709-critical-use-after-free-vulnerability-in-windows-ancillary-function-driver-for-winsock\/\"  data-wpil-monitor-id=\"91722\">Windows Cloud Files Mini Filter Driver<\/a> | All versions prior to the latest patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of a flaw in the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43596-insecure-file-system-permissions-vulnerability-in-msp360-backup-8-0\/\"  data-wpil-monitor-id=\"91404\">permission handling of the Windows Cloud Files<\/a> Mini Filter Driver. An attacker with legitimate access to the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-36890-critical-elevation-of-privilege-vulnerability-may-lead-to-system-compromise\/\"  data-wpil-monitor-id=\"87816\">system can manipulate the permissions to grant themselves higher privileges<\/a>. This can be accomplished by a carefully crafted <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-58833-cross-site-request-forgery-vulnerability-in-invelity-mygls-connect\/\"  data-wpil-monitor-id=\"86990\">request to the vulnerable<\/a> component of the driver. Once the attacker has <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55241-azure-entra-elevation-of-privilege-vulnerability\/\"  data-wpil-monitor-id=\"86956\">elevated their privileges<\/a>, they can perform unauthorized actions, potentially leading to system compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-247651029\" class=\"ameeb-content ameeb-entity-placement\"><div class=\"poptin-embedded\" data-id=\"f6b387694f681\"><\/div>\r\n\r\n\r\n\r\n\r\n\r\n<\/div>\n<p>While the exact <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47099-heap-based-buffer-overflow-vulnerability-in-incopy-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"86811\">code to exploit this vulnerability<\/a> will depend on the specific configuration and environment, a simplified conceptual example might look something like this:<\/p>\n<pre><code class=\"\" data-line=\"\">$ echo &quot;malicious_payload&quot; &gt; \/path\/to\/vulnerable\/component\n$ .\/exploit_script.sh \/path\/to\/vulnerable\/component<\/code><\/pre>\n<p>In this conceptual example, `malicious_payload` is a specially crafted string that manipulates the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49521-critical-vulnerability-in-eda-component-of-ansible-automation-platform\/\"  data-wpil-monitor-id=\"92361\">vulnerable component<\/a>. The `exploit_script.sh` script would then use this modified component to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55244-azure-bot-service-elevation-of-privilege-vulnerability-a-comprehensive-analysis\/\"  data-wpil-monitor-id=\"86966\">elevate the attacker&#8217;s privileges<\/a>.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>The best mitigation for this vulnerability is to apply the latest patch provided by the vendor, which addresses the improper handling issue. Until the patch can be applied, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to monitor and block suspicious activity can serve as a temporary mitigation strategy. However, these methods can only reduce the risk, not eliminate it, so applying the vendor patch as soon as possible is strongly recommended.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In today&#8217;s cybersecurity landscape, one of the most critical concerns is the improper handling of insufficient permissions or privileges. A particularly concerning example of this is the recently identified vulnerability with the identifier CVE-2025-50170. This vulnerability exists in the Windows Cloud Files Mini Filter Driver and allows an authorized attacker to elevate privileges locally. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[82],"product":[],"attack_vector":[76],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-79352","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-microsoft","attack_vector-privilege-escalation"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/79352","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/comments?post=79352"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/79352\/revisions"}],"predecessor-version":[{"id":85585,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/79352\/revisions\/85585"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=79352"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=79352"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=79352"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=79352"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=79352"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=79352"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=79352"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=79352"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=79352"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}