{"id":59380,"date":"2025-07-14T17:06:22","date_gmt":"2025-07-14T17:06:22","guid":{"rendered":""},"modified":"2025-10-28T08:19:53","modified_gmt":"2025-10-28T14:19:53","slug":"cve-2025-20684-potential-escalation-of-privilege-in-wlan-ap-driver","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-20684-potential-escalation-of-privilege-in-wlan-ap-driver\/","title":{"rendered":"<strong>CVE-2025-20684: Potential Escalation of Privilege in WLAN AP Driver<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>CVE-2025-20684 is a critical vulnerability that exists in the WLAN AP driver, which, if exploited, can lead to a local escalation of privilege. The vulnerability lies in an incorrect bounds check which can result in an out of bounds write. It&#8217;s a significant issue because it doesn&#8217;t require any user interaction for exploitation, and it could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43186-critical-memory-handling-issue-leading-to-unexpected-app-termination-and-potential-system-compromise\/\"  data-wpil-monitor-id=\"69789\">potentially compromise the system or lead<\/a> to data leakage. Entities that are reliant on the affected driver, especially those dealing with sensitive data, must pay close attention to this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40600-severe-externally-controlled-format-string-vulnerability-in-sonicos-ssl-vpn-interface\/\"  data-wpil-monitor-id=\"69788\">vulnerability as its successful exploitation could have severe<\/a> consequences.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-20684<br \/>\nSeverity: Critical &#8211; CVSS Score 9.8<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: User<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-33077-local-stack-based-buffer-overflow-vulnerability-in-ibm-engineering-systems-design-rhapsody\/\"  data-wpil-monitor-id=\"68586\">Local escalation of privilege leading to potential system<\/a> compromise or data leakage.<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3341020165\" 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-2025-20681-wlan-ap-driver-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"91579\">WLAN AP Driver<\/a> | All versions before patch WCNCR00416939<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45777-critical-vulnerability-in-otp-mechanism-bypassing-authentication-in-chavara-matrimony-site\/\"  data-wpil-monitor-id=\"70935\">vulnerability stems from a failure in the bounds check mechanism<\/a> within the WLAN AP driver. This flawed mechanism allows an attacker to write data beyond the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46713-buffer-overflow-vulnerability-in-sandboxie-s-memory-allocation-subsystem\/\"  data-wpil-monitor-id=\"68585\">allocated memory<\/a> space-an out-of-bounds write. This action can lead to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30419-memory-corruption-vulnerability-in-ni-circuit-design-suite\/\"  data-wpil-monitor-id=\"68195\">memory corruption<\/a> or even a crash, but more critically, it can allow an attacker to execute arbitrary code with user privileges. With this level of access, an attacker can potentially gain control over the system or <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50060-critical-data-access-vulnerability-in-oracle-bi-publisher\/\"  data-wpil-monitor-id=\"70936\">access sensitive data<\/a>.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-445099328\" 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<br \/>\n<strong>conceptual<\/strong><br \/>\n example of how the vulnerability might be exploited using pseudocode:<\/p>\n<pre><code class=\"\" data-line=\"\"># Assuming the attacker already has user access on the system\ndef exploit_CVE_2025_20684():\n# Create an oversized payload\npayload = create_payload(OVERSIZED)\n# Write the payload to the vulnerable driver\nwrite_to_driver(&quot;WLAN AP Driver&quot;, payload)\n# The payload is now executed with user privileges\nexecute_payload(payload)<\/code><\/pre>\n<p>This pseudocode illustrates an attacker creating an oversized payload, writing this payload to the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8901-high-severity-out-of-bounds-write-vulnerability-in-angle-google-chrome\/\"  data-wpil-monitor-id=\"78833\">WLAN AP<\/a> driver-exploiting the incorrect bounds check, and then executing the payload with user privileges.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>The best mitigation for this vulnerability is to apply the vendor patch identified as WCNCR00416939. If immediate application of the patch is not possible, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. These <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43192-critical-configuration-issue-in-macos-allowing-potential-system-compromise\/\"  data-wpil-monitor-id=\"75818\">systems should be configured<\/a> to detect and block attempts to exploit this vulnerability. Furthermore, it is advisable to follow the principle of least privilege, ensuring user accounts have the minimum level of access necessary, reducing the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40741-stack-based-overflow-vulnerability-in-solid-edge-se2025-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"75817\">potential impact of this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview CVE-2025-20684 is a critical vulnerability that exists in the WLAN AP driver, which, if exploited, can lead to a local escalation of privilege. The vulnerability lies in an incorrect bounds check which can result in an out of bounds write. It&#8217;s a significant issue because it doesn&#8217;t require any user interaction for exploitation, and [&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":[86,76],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59380","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-privilege-escalation"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59380","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=59380"}],"version-history":[{"count":7,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59380\/revisions"}],"predecessor-version":[{"id":84747,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59380\/revisions\/84747"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=59380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=59380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=59380"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=59380"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=59380"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=59380"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=59380"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=59380"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=59380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}