{"id":74169,"date":"2025-09-11T13:45:14","date_gmt":"2025-09-11T13:45:14","guid":{"rendered":""},"modified":"2025-10-23T04:01:28","modified_gmt":"2025-10-23T10:01:28","slug":"cve-2025-48534-an-escalation-of-privilege-vulnerability-in-getdefaultcbrpackagename-of-cellbroadcasthandler-java","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-48534-an-escalation-of-privilege-vulnerability-in-getdefaultcbrpackagename-of-cellbroadcasthandler-java\/","title":{"rendered":"<strong>CVE-2025-48534: An Escalation of Privilege Vulnerability in getDefaultCBRPackageName of CellBroadcastHandler.java<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>CVE-2025-48534 is a critical cybersecurity vulnerability that has a potential to cause a system compromise or data leakage. This flaw lies in the getDefaultCBRPackageName section of CellBroadcastHandler.java, a component of certain software systems. Any lapse in addressing this vulnerability could lead to an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53740-unauthorized-code-execution-vulnerability-in-microsoft-office\/\"  data-wpil-monitor-id=\"81724\">escalation of privilege<\/a> due to a logic error in the code, potentially resulting in a local denial of service. The primary concern here is that an attacker can exploit this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5821-critical-authentication-bypass-vulnerability-in-case-theme-user-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"83302\">vulnerability without any user<\/a> interaction, making it a silent yet potent threat to the integrity of affected systems.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-48534<br \/>\nSeverity: High (8.8 CVSS Score)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: System<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2022-45134-critical-vulnerability-in-mahara-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"82956\">Potential for system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3225670220\" 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>CellBroadcastHandler.java | All <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46715-kernel-pointer-vulnerability-in-sandboxie-versions-prior-to-1-15-12\/\"  data-wpil-monitor-id=\"82773\">prior versions<\/a><br \/>\n(Note: Specific product and version details are not available currently, but this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47108-out-of-bounds-write-vulnerability-in-substance3d-painter-versions-11-0-1-and-earlier\/\"  data-wpil-monitor-id=\"81986\">vulnerability likely impacts all prior versions<\/a> of software systems that incorporate the getDefaultCBRPackageName of CellBroadcastHandler.java.)<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>This vulnerability can be exploited by an attacker who has already obtained <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3931-yggdrasil-s-flaw-opens-door-to-local-privilege-escalation-and-system-compromise\/\"  data-wpil-monitor-id=\"91360\">system level privileges<\/a> on the victim&#8217;s machine. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50286-remote-code-execution-vulnerability-in-grav-cms-v1-7-48\/\"  data-wpil-monitor-id=\"82047\">vulnerability lies in a logic error in the code<\/a> of CellBroadcastHandler.java, specifically in the &#8216;getDefaultCBRPackageName&#8217; function. This error can be exploited to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24005-local-privilege-escalation-via-vulnerable-ssh-script\/\"  data-wpil-monitor-id=\"81928\">escalate the attacker&#8217;s privileges<\/a>, granting them control over the system. This control could be used to cause a denial of service or to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-57157-unauthorised-access-to-sensitive-apis-in-jantent-v1-1\/\"  data-wpil-monitor-id=\"81737\">access sensitive<\/a> information, potentially leading to data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2685825210\" 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>The following is a conceptual representation of how the vulnerability might be exploited.<\/p>\n<pre><code class=\"\" data-line=\"\">\/\/ Assume that the attacker has system level access\nSystemPrivileges attacker = new SystemPrivileges();\n\/\/ Exploit the logic error in getDefaultCBRPackageName\nString maliciousCode = &quot;manipulated logic here&quot;;\nattacker.escalatePrivileges(maliciousCode);\n\/\/ The attacker now has escalated privileges\nSystem.out.println(&quot;Privileges escalated: &quot; + attacker.hasEscalatedPrivileges());\n\/\/ The attacker can now cause a denial of service or leak data\nattacker.executeMaliciousActions();<\/code><\/pre>\n<p>(Note: This is a simplified representation and actual exploitation may involve more complex operations.)<br \/>\nThe immediate mitigation recommended is to apply the vendor patch, if available. In its absence, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as temporary mitigation methods. Organizations are strongly advised to update their <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-25180-underprivileged-software-manipulates-gpu-system-calls-for-unauthorized-access\/\"  data-wpil-monitor-id=\"88759\">systems and software<\/a> to the latest versions to minimize the risk of exploitation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview CVE-2025-48534 is a critical cybersecurity vulnerability that has a potential to cause a system compromise or data leakage. This flaw lies in the getDefaultCBRPackageName section of CellBroadcastHandler.java, a component of certain software systems. Any lapse in addressing this vulnerability could lead to an escalation of privilege due to a logic error in the code, [&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":[87],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-74169","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-dos"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/74169","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=74169"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/74169\/revisions"}],"predecessor-version":[{"id":84391,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/74169\/revisions\/84391"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=74169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=74169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=74169"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=74169"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=74169"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=74169"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=74169"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=74169"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=74169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}