{"id":69155,"date":"2025-08-31T14:11:56","date_gmt":"2025-08-31T14:11:56","guid":{"rendered":""},"modified":"2025-10-02T00:14:52","modified_gmt":"2025-10-02T06:14:52","slug":"cve-2025-27216-privilege-escalation-in-uisp-application-due-to-incorrect-permission-assignment","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-27216-privilege-escalation-in-uisp-application-due-to-incorrect-permission-assignment\/","title":{"rendered":"<strong>CVE-2025-27216: Privilege Escalation in UISP Application Due to Incorrect Permission Assignment<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A recently disclosed vulnerability, identified as CVE-2025-27216, poses a significant threat to the cybersecurity landscape. This vulnerability has been found in the UISP application, a popular software extensively used across various industry verticals. It revolves around a critical resource, which, due to improper permissions, could be exploited by a malicious actor to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48799-privilege-escalation-vulnerability-in-windows-update-service\/\"  data-wpil-monitor-id=\"77828\">escalate privileges<\/a>. This matters greatly, as it <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42950-sap-landscape-transformation-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"77588\">potentially exposes systems<\/a> to compromise and increases the risk of sensitive data leakage. As such, security professionals and systems administrators dealing with <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-51536-critical-hardcoded-administrator-password-vulnerability-in-ai-openatlas\/\"  data-wpil-monitor-id=\"76746\">UISP<\/a> are strongly urged to familiarize themselves with the details of this vulnerability and apply the necessary mitigation strategies.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-27216<br \/>\nSeverity: High (8.8 CVSS)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8939-buffer-overflow-vulnerability-in-tenda-ac20-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"78310\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-735891240\" 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>UISP | All <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55010-arbitrary-php-object-instantiation-in-kanboard-prior-to-version-1-2-47\/\"  data-wpil-monitor-id=\"77897\">versions prior<\/a> to update X.Y.Z<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-36594-critical-authentication-bypass-vulnerability-in-dell-powerprotect-data-domain\/\"  data-wpil-monitor-id=\"76770\">vulnerability stems from incorrect permission assignments for a critical<\/a> resource within the UISP application. An attacker with certain permissions (classed as lower-level permissions) can manipulate these permissions to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22889-intel-xeon-6-processor-privilege-escalation-vulnerability\/\"  data-wpil-monitor-id=\"78242\">escalate their privileges<\/a> within the application. This escalated <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32992-incorrect-access-control-vulnerability-in-thermo-fisher-scientific-eport\/\"  data-wpil-monitor-id=\"76773\">access may grant the attacker more power and control<\/a> over the application and the underlying system, potentially leading to system compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2135988450\" 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 pseudocode example <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49527-buffer-overflow-vulnerability-in-illustrator-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"78175\">illustrates how an attacker might exploit this vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\"># Attacker logs into the system with low-level permissions\n$ ssh lowPrivUser@target.example.com\n# Attacker locates critical resource with incorrect permissions\n$ ls -l \/path\/to\/critical\/resource\n# Attacker manipulates permissions to escalate privileges\n$ sudo chown lowPrivUser \/path\/to\/critical\/resource\n$ sudo chmod 777 \/path\/to\/critical\/resource\n# Now, the attacker has full control over the critical resource<\/code><\/pre>\n<p>Please note that this is a simplified, conceptual example. Real-world exploits may be more complex and require a more detailed understanding of the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2022-43110-critical-unauthenticated-remote-system-configuration-vulnerability-in-voltronic-power-viewpower-powershield-netguard\/\"  data-wpil-monitor-id=\"83167\">system&#8217;s configuration<\/a> and the UISP application&#8217;s internals.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>The most effective way to mitigate this vulnerability is to apply the vendor-supplied patch. UISP has released an update that corrects the permission assignments and closes the avenue for <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5687-privilege-escalation-vulnerability-in-mozilla-vpn-on-macos\/\"  data-wpil-monitor-id=\"78362\">privilege escalation<\/a>. It is strongly recommended to update to the latest version of UISP as soon as possible.<br \/>\nAs a temporary measure, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to monitor and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-7457-macos-authorization-model-exploit-leading-to-potential-mitm-attacks\/\"  data-wpil-monitor-id=\"79967\">potentially block exploit<\/a> attempts. However, this is not a permanent solution and does not <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-58280-object-heap-address-exposure-vulnerability-in-ark-ets\/\"  data-wpil-monitor-id=\"87324\">address the root cause of the vulnerability<\/a>. Therefore, it should be seen as a stopgap measure until the patch can be applied.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A recently disclosed vulnerability, identified as CVE-2025-27216, poses a significant threat to the cybersecurity landscape. This vulnerability has been found in the UISP application, a popular software extensively used across various industry verticals. It revolves around a critical resource, which, due to improper permissions, could be exploited by a malicious actor to escalate 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-69155","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\/69155","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=69155"}],"version-history":[{"count":13,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/69155\/revisions"}],"predecessor-version":[{"id":80154,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/69155\/revisions\/80154"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=69155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=69155"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=69155"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=69155"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=69155"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=69155"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=69155"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=69155"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=69155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}