{"id":80581,"date":"2025-10-02T13:38:14","date_gmt":"2025-10-02T13:38:14","guid":{"rendered":""},"modified":"2025-11-02T11:12:40","modified_gmt":"2025-11-02T17:12:40","slug":"cve-2025-53729-azure-file-sync-improper-access-control-vulnerability","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-53729-azure-file-sync-improper-access-control-vulnerability\/","title":{"rendered":"<strong>CVE-2025-53729: Azure File Sync Improper Access Control Vulnerability<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the realm of cybersecurity, new vulnerabilities are being discovered, exploited and patched on a regular basis. One such vulnerability, identified as CVE-2025-53729, poses a significant threat to the Azure File Sync service, which is widely used by enterprises for cloud-based file sharing and synchronization. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-36890-critical-elevation-of-privilege-vulnerability-may-lead-to-system-compromise\/\"  data-wpil-monitor-id=\"87822\">vulnerability allows an authorized attacker to elevate privileges<\/a> locally, potentially leading to system compromise or data leakage. Given the critical role that Azure File Sync plays in enterprise <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53691-deserialization-of-untrusted-data-vulnerability-in-sitecore-experience-manager-and-platform\/\"  data-wpil-monitor-id=\"87808\">data management<\/a>, addressing this vulnerability should be a top priority.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-53729<br \/>\nSeverity: High (7.8 CVSS Score)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-36326-bypassing-amd-romarmor-protections-to-compromise-system-security\/\"  data-wpil-monitor-id=\"87845\">System compromise<\/a> or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-988144447\" 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>Azure <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52904-command-execution-vulnerability-in-file-browser-version-2-32-0\/\"  data-wpil-monitor-id=\"92218\">File Sync | All versions<\/a> prior to the patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>This exploit takes advantage of improper <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55370-unauthorized-access-control-vulnerability-in-jsherp-v3-5\/\"  data-wpil-monitor-id=\"89351\">access control<\/a> mechanisms in Azure File Sync. An attacker who already has access to the system can elevate their <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52521-local-privilege-escalation-vulnerability-in-trend-micro-security-17-8\/\"  data-wpil-monitor-id=\"88011\">privileges locally<\/a>. This could lead to unauthorised access to sensitive data, or even <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-58755-high-risk-vulnerability-in-monai-ai-toolkit-allowing-system-file-overwrite\/\"  data-wpil-monitor-id=\"88987\">allow the attacker to gain control of the system<\/a>. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9114-critical-arbitrary-user-password-change-vulnerability-in-doccure-wordpress-theme\/\"  data-wpil-monitor-id=\"88310\">vulnerability is especially dangerous because it requires no user<\/a> interaction to exploit.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2708491488\" 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>Here&#8217;s a conceptual example of how the vulnerability might be exploited. Please note that this is a simplified representation and does not include all the steps an attacker might need to take.<\/p>\n<pre><code class=\"\" data-line=\"\"># Attacker gains low-level access to the system\n$ ssh user@target.system.com\n# Attacker uses the vulnerability to elevate privileges\n$ exploit_CVE-2025-53729\n# Attacker now has high-level access to the system\n$ whoami\nroot<\/code><\/pre>\n<p><strong>Mitigation<\/strong><\/p>\n<p>The most effective way to mitigate this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-58214-php-remote-file-inclusion-vulnerability-in-gavias-indutri\/\"  data-wpil-monitor-id=\"87935\">vulnerability is to apply the vendor-provided patch for Azure File<\/a> Sync. If this is not immediately possible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. However, these should not be relied upon as long-term solutions, as they may not fully prevent exploitation of the vulnerability. Regularly updating and patching <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-25180-underprivileged-software-manipulates-gpu-system-calls-for-unauthorized-access\/\"  data-wpil-monitor-id=\"88740\">software is a key aspect of maintaining a secure system<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the realm of cybersecurity, new vulnerabilities are being discovered, exploited and patched on a regular basis. One such vulnerability, identified as CVE-2025-53729, poses a significant threat to the Azure File Sync service, which is widely used by enterprises for cloud-based file sharing and synchronization. This vulnerability allows an authorized attacker to elevate privileges [&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":[],"product":[],"attack_vector":[76],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-80581","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-privilege-escalation"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/80581","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=80581"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/80581\/revisions"}],"predecessor-version":[{"id":85432,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/80581\/revisions\/85432"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=80581"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=80581"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=80581"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=80581"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=80581"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=80581"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=80581"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=80581"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=80581"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}