{"id":51197,"date":"2025-06-12T02:30:34","date_gmt":"2025-06-12T02:30:34","guid":{"rendered":""},"modified":"2025-06-14T19:38:09","modified_gmt":"2025-06-15T01:38:09","slug":"cve-2025-3925-execution-with-unnecessary-privileges-vulnerability-in-brightsign-players","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-3925-execution-with-unnecessary-privileges-vulnerability-in-brightsign-players\/","title":{"rendered":"<strong>CVE-2025-3925: Execution with Unnecessary Privileges Vulnerability in BrightSign Players<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The CVE-2025-3925 vulnerability is a security flaw identified in BrightSign players, affecting those running BrightSign OS series 4 prior to v8.5.53.1 or series 5 prior to v9.0.166. This vulnerability allows for privilege escalation on the device once code execution has been obtained, significantly compromising the system&#8217;s integrity and security. Given the widespread use of BrightSign players for digital signage across numerous industries, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3394-critical-resource-vulnerability-in-abb-automation-builder\/\"  data-wpil-monitor-id=\"57500\">vulnerability is a critical<\/a> issue that requires immediate attention and mitigation.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-3925<br \/>\nSeverity: High (CVSS: 7.8)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2021-47668-linux-kernel-vulnerability-leading-to-potential-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"57561\">Potential system compromise or data<\/a> leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2995870910\" 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>BrightSign OS series 4 | Prior to v8.5.53.1<br \/>\nBrightSign OS series 5 | Prior to v9.0.166<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The CVE-2025-3925 vulnerability is exploited when an attacker manages to execute code on a BrightSign player, which then allows them to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-34489-critical-local-privilege-escalation-vulnerability-in-gfi-mailessentials\/\"  data-wpil-monitor-id=\"57560\">escalate their privileges<\/a> on the device. This is typically achieved by exploiting other <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48881-unauthorized-access-and-modification-vulnerability-in-valtimo-business-process-automation\/\"  data-wpil-monitor-id=\"57406\">vulnerabilities or through social engineering attacks to gain initial access<\/a>. Once the attacker has <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1731-privilege-escalation-vulnerability-in-usg-flex-h-series-uos-firmware\/\"  data-wpil-monitor-id=\"57648\">escalated their privileges<\/a>, they can perform actions that are normally restricted, compromising the integrity and confidentiality of the system.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1214362388\" 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 example <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49113-critical-vulnerability-in-roundcube-webmail-allows-remote-code-execution\/\"  data-wpil-monitor-id=\"58350\">code that demonstrates how this vulnerability<\/a> might be exploited. It&#8217;s important to note that this is only a simplified example, and actual exploits may be much more complex and require more advanced techniques.<\/p>\n<pre><code class=\"\" data-line=\"\"># Attacker gains initial low-privilege access to the system\nssh user@target_device\n# Attacker runs a code exploiting the CVE-2025-3925 vulnerability\n.\/exploit_CVE-2025-3925\n# If the exploit is successful, the attacker now has escalated privileges\nsudo -i\n# The attacker can now perform actions that are normally restricted\nrm -rf \/<\/code><\/pre>\n<p>In this example, the attacker takes advantage of the CVE-2025-3925 <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4631-privilege-escalation-vulnerability-in-profitori-wordpress-plugin\/\"  data-wpil-monitor-id=\"57430\">vulnerability to escalate their privileges<\/a> from a low-privileged user to a high-privileged user. They then perform a destructive action that would normally be restricted.<br \/>\nIn order to protect your <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46584-improper-authentication-logic-vulnerability-in-file-system-module\/\"  data-wpil-monitor-id=\"57985\">systems against this vulnerability<\/a>, it is recommended to apply the vendor patch or use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as temporary mitigation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The CVE-2025-3925 vulnerability is a security flaw identified in BrightSign players, affecting those running BrightSign OS series 4 prior to v8.5.53.1 or series 5 prior to v9.0.166. This vulnerability allows for privilege escalation on the device once code execution has been obtained, significantly compromising the system&#8217;s integrity and security. Given the widespread use of [&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-51197","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\/51197","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=51197"}],"version-history":[{"count":7,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/51197\/revisions"}],"predecessor-version":[{"id":52083,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/51197\/revisions\/52083"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=51197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=51197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=51197"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=51197"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=51197"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=51197"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=51197"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=51197"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=51197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}