{"id":85606,"date":"2025-11-04T14:56:47","date_gmt":"2025-11-04T14:56:47","guid":{"rendered":""},"modified":"2025-11-11T11:04:01","modified_gmt":"2025-11-11T17:04:01","slug":"cve-2025-54906-unauthorized-code-execution-via-memory-mismanagement-in-microsoft-office","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-54906-unauthorized-code-execution-via-memory-mismanagement-in-microsoft-office\/","title":{"rendered":"<strong>CVE-2025-54906: Unauthorized Code Execution via Memory Mismanagement in Microsoft Office<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>CVE-2025-54906 is a significant vulnerability that affects Microsoft Office, a widely used productivity suite. This vulnerability arises from flawed memory management, specifically the freeing of memory not on the heap, which potentially allows an unauthorized attacker to execute code locally. Due to the broad usage of Microsoft Office, this vulnerability could have a substantial impact on organizations across the globe, highlighting the necessity for immediate attention and mitigation.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-54906<br \/>\nSeverity: High (CVSS: 7.8)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49668-heap-based-buffer-overflow-in-windows-rras-resulting-in-potential-system-compromise\/\"  data-wpil-monitor-id=\"92448\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1770750896\" 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>Microsoft Office | All versions prior to the vendor patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability lies in the incorrect handling of memory not on the heap within Microsoft Office. An attacker could craft a malicious file that, when opened in Microsoft Office, triggers the flaw and allows the attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-2945-critical-remote-code-execution-vulnerability-in-pgadmin-4\/\"  data-wpil-monitor-id=\"92493\">execute arbitrary code<\/a> on the victim&#8217;s system. This code execution occurs in the context of the current user.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3727189641\" 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>This is a conceptual example, representing how a malicious payload might be embedded in a Microsoft Office <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52812-a-critical-php-remote-file-inclusion-vulnerability-in-apuswp-domnoo\/\"  data-wpil-monitor-id=\"92391\">file to exploit this vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">&lt;doc&gt;\n&lt;element attribute=&quot;exp&quot;&gt;\n&lt;![CDATA[\nfunction exploit() {\nvar malicious_code = &quot;Base64 encoded malicious code&quot;;\nvar vulnerable_memory = freeHeapMemory();\nvulnerable_memory.execute(malicious_code);\n}\nexploit();\n]]&gt;\n&lt;\/element&gt;\n&lt;\/doc&gt;<\/code><\/pre>\n<p>In this hypothetical example, the malicious code is embedded within a function that is called when the document is opened. The `freeHeapMemory` function call triggers the vulnerability, allowing the execution of the malicious code as the current user.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview CVE-2025-54906 is a significant vulnerability that affects Microsoft Office, a widely used productivity suite. This vulnerability arises from flawed memory management, specifically the freeing of memory not on the heap, which potentially allows an unauthorized attacker to execute code locally. Due to the broad usage of Microsoft Office, this vulnerability could have a substantial [&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":[82],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-85606","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-microsoft"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/85606","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=85606"}],"version-history":[{"count":3,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/85606\/revisions"}],"predecessor-version":[{"id":85778,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/85606\/revisions\/85778"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=85606"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=85606"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=85606"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=85606"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=85606"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=85606"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=85606"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=85606"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=85606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}