{"id":84405,"date":"2025-10-23T05:26:09","date_gmt":"2025-10-23T05:26:09","guid":{"rendered":""},"modified":"2025-10-28T22:21:41","modified_gmt":"2025-10-29T04:21:41","slug":"cve-2025-20705-severe-memory-corruption-leading-to-privilege-escalation","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-20705-severe-memory-corruption-leading-to-privilege-escalation\/","title":{"rendered":"<strong>CVE-2025-20705: Severe Memory Corruption Leading to Privilege Escalation<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>CVE-2025-20705 is a critical security vulnerability discovered in the monitor_hang function which can potentially lead to memory corruption due to use after free. This vulnerability can be exploited by a malicious actor to escalate their privilege to System level, leading to possible system compromise or data leakage. Given its severity and the potential damage it can cause, it is imperative for <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43596-insecure-file-system-permissions-vulnerability-in-msp360-backup-8-0\/\"  data-wpil-monitor-id=\"91415\">system administrators and security teams to understand this vulnerability<\/a> and take necessary mitigation steps.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-20705<br \/>\nSeverity: High (CVSS: 7.8)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: System<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43931-potential-system-compromise-via-flask-boilerplate-s-password-reset-feature\/\"  data-wpil-monitor-id=\"91490\">System compromise and potential<\/a> data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1906124067\" 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>[Insert product] | [Insert affected version]<br \/>\n[Insert product] | [Insert affected version]<br \/>\n(Note: The affected products need to be specified. Without the exact data, it&#8217;s not possible to infer the affected products)<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit leverages a flaw in the monitor_hang function where a dangling pointer can be used after the memory it points to has been freed. This creates a &#8220;use after free&#8221; condition that can lead to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30418-memory-corruption-vulnerability-in-ni-circuit-design-suite\/\"  data-wpil-monitor-id=\"91376\">memory corruption<\/a>. An attacker who has already obtained System <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-40459-local-privilege-escalation-vulnerability-in-ocuco-innovation-appmanager-exe\/\"  data-wpil-monitor-id=\"91395\">privileges can exploit this flaw to escalate<\/a> their privileges to a higher level, potentially gaining full control over the system or causing data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2706928768\" 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>Please note that this is a simplified and hypothetical example of how the vulnerability might be exploited. Actual exploitation would depend on the specific conditions of the target system.<\/p>\n<pre><code class=\"\" data-line=\"\">$ echo &quot;malicious_payload&quot; &gt; \/proc\/monitor_hang<\/code><\/pre>\n<p>In this example, the attacker with <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32706-windows-common-log-file-system-driver-privilege-elevation-vulnerability\/\"  data-wpil-monitor-id=\"91739\">system privileges writes a malicious payload to the \/proc\/monitor_hang file<\/a>. If the vulnerability exists, this could lead to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30421-memory-corruption-vulnerability-in-ni-circuit-design-suite\/\"  data-wpil-monitor-id=\"91378\">memory corruption<\/a> and potential privilege escalation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview CVE-2025-20705 is a critical security vulnerability discovered in the monitor_hang function which can potentially lead to memory corruption due to use after free. This vulnerability can be exploited by a malicious actor to escalate their privilege to System level, leading to possible system compromise or data leakage. Given its severity and the potential damage [&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-84405","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\/84405","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=84405"}],"version-history":[{"count":6,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/84405\/revisions"}],"predecessor-version":[{"id":84911,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/84405\/revisions\/84911"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=84405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=84405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=84405"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=84405"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=84405"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=84405"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=84405"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=84405"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=84405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}