{"id":84906,"date":"2025-10-28T20:40:00","date_gmt":"2025-10-28T20:40:00","guid":{"rendered":""},"modified":"2025-10-29T17:39:10","modified_gmt":"2025-10-29T23:39:10","slug":"cve-2025-26454-local-privilege-escalation-in-disclaimersparserimpl-java-via-confused-deputy","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-26454-local-privilege-escalation-in-disclaimersparserimpl-java-via-confused-deputy\/","title":{"rendered":"<strong>CVE-2025-26454: Local Privilege Escalation in DisclaimersParserImpl.java via Confused Deputy<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>CVE-2025-26454 represents a serious vulnerability in the validateUriSchemeAndPermission function found in DisclaimersParserImpl.java. This vulnerability allows unauthorized access to user data, potentially leading to local privilege escalation. This can occur without the need for additional execution privileges or user interaction, posing a significant threat to all systems utilizing this software.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-26454<br \/>\nSeverity: High (7.8 CVSS Score)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: Unauthorized access to user data, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30400-potential-system-compromise-with-privilege-elevation-in-windows-dwm\/\"  data-wpil-monitor-id=\"91820\">potential system compromise<\/a> or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-4201179516\" 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: 720px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 22px; font-weight: 600; display: flex; align-items: center; letter-spacing: -0.02em;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 10px;\">\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: 42px; height: 42px;\" \/>\r\n    <\/a>\r\n    Share secrets securely\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 14px; color: #d1d5db;\">\r\n    Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 18px; color: #a1a1aa;\">\r\n    Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 24px; color: #e4e4e7;\">\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Encrypted identity<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Private Spaces for organizations and teams<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 End-to-end encrypted chat, calls, files, and notes<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Sensitive AI work and protected collaboration<\/li>\r\n    <li>\u2022 Built for information that cannot leak<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px; color: #ffffff;\">\r\n    Our mission is to secure human work alongside AI.\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: 8px; font-weight: 500;\">\r\n      Download Ameeba\r\n    <\/a>\r\n\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Learn More\r\n    <\/a>\r\n  <\/div>\r\n<\/div><\/div>\n<p>Product | Affected Versions<\/p>\n<p>DisclaimersParserImpl.java | All versions up to the latest<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability lies in the validateUriSchemeAndPermission function. This function does not correctly validate permissions, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30383-type-confusion-vulnerability-in-microsoft-office-excel-leading-to-unauthorized-code-execution\/\"  data-wpil-monitor-id=\"91866\">leading to a confused<\/a> deputy scenario. In this scenario, an entity is tricked into misusing its authority, hence allowing an attacker to escalate their <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32706-windows-common-log-file-system-driver-privilege-elevation-vulnerability\/\"  data-wpil-monitor-id=\"91752\">privileges on the local system<\/a>. An attacker could exploit this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30382-untrusted-data-deserialization-vulnerability-in-microsoft-office-sharepoint\/\"  data-wpil-monitor-id=\"91845\">vulnerability to access data<\/a> from another user, leading to potential information disclosure, system compromise, or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1849585436\" 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<pre><code class=\"\" data-line=\"\">\/\/ Conceptual exploit of CVE-2025-26454\ntry {\n\/\/ Assume the attacker has access to the system and can execute this code\nUri maliciousUri = new Uri.Builder().scheme(&quot;file&quot;).path(&quot;\/data\/user\/0\/&lt;victim_app&gt;\/files\/&quot;).build();\nvalidateUriSchemeAndPermission(maliciousUri);  \/\/ Exploits the confused deputy in validateUriSchemeAndPermission\n\/\/ The attacker now has access to sensitive user data\n} catch (Exception e) {\n\/\/ Handle exception\n}<\/code><\/pre>\n<p>Please note that the above code is a conceptual representation of the exploit and might not work as is.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>To mitigate the vulnerability, users are advised to apply the vendor patch once it is available. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation strategy. These tools can monitor and potentially block malicious activities, reducing the risk of exploitation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview CVE-2025-26454 represents a serious vulnerability in the validateUriSchemeAndPermission function found in DisclaimersParserImpl.java. This vulnerability allows unauthorized access to user data, potentially leading to local privilege escalation. This can occur without the need for additional execution privileges or user interaction, posing a significant threat to all systems utilizing this software. Vulnerability Summary CVE ID: CVE-2025-26454 [&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-84906","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\/84906","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=84906"}],"version-history":[{"count":4,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/84906\/revisions"}],"predecessor-version":[{"id":85044,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/84906\/revisions\/85044"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=84906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=84906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=84906"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=84906"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=84906"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=84906"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=84906"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=84906"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=84906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}