{"id":53960,"date":"2025-06-21T20:10:39","date_gmt":"2025-06-21T20:10:39","guid":{"rendered":""},"modified":"2025-10-29T17:39:03","modified_gmt":"2025-10-29T23:39:03","slug":"cve-2025-32717-heap-based-buffer-overflow-in-microsoft-office-word-leading-to-unauthorized-code-execution","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-32717-heap-based-buffer-overflow-in-microsoft-office-word-leading-to-unauthorized-code-execution\/","title":{"rendered":"<strong>CVE-2025-32717: Heap-based Buffer Overflow in Microsoft Office Word Leading to Unauthorized Code Execution<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>CVE-2025-32717 is a significant vulnerability found in the widely used software Microsoft Office Word. This flaw allows an attacker to exploit a heap-based buffer overflow to execute code locally on the victim&#8217;s system. This vulnerability is of particular concern due to the prevalence of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49136-critical-vulnerability-in-listmonk-allows-unauthorized-access-to-sensitive-environment-variables\/\"  data-wpil-monitor-id=\"60370\">Microsoft Office Word<\/a> in both personal and professional environments, making a broad range of users potentially exposed to this security risk.<br \/>\nA successful exploit of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31396-untrusted-data-deserialization-vulnerability-in-themeton-flap-business-wordpress-theme\/\"  data-wpil-monitor-id=\"60249\">vulnerability could lead to a system compromise or data<\/a> leakage, posing a serious threat to the confidentiality, integrity, and availability of data. Given the CVSS Severity Score of 8.4, it&#8217;s clear that this vulnerability needs immediate attention and mitigation.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-32717<br \/>\nSeverity: High (8.4)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6435-firefox-vulnerability-leading-to-potential-system-compromise-and-data-leakage\/\"  data-wpil-monitor-id=\"64838\">System compromise or data<\/a> leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1950167318\" 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><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47166-critical-deserialization-vulnerability-in-microsoft-office-sharepoint\/\"  data-wpil-monitor-id=\"61087\">Microsoft Office<\/a> Word | Versions prior to the latest patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of a heap-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5901-buffer-overflow-vulnerability-in-totolink-t10-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"60509\">buffer overflow vulnerability<\/a> in Microsoft Office Word. An attacker would craft a malicious Word document that, when opened, would <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5903-critical-buffer-overflow-vulnerability-in-totolink-t10-4-1-8cu-5207\/\"  data-wpil-monitor-id=\"60577\">overflow the buffer<\/a> and allow the attacker to execute arbitrary code on the victim&#8217;s system. This code could then <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40912-critical-vulnerability-in-cryptx-for-perl-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"60955\">potentially compromise the system<\/a> or lead to data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1520121250\" 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>Consider the following<br \/>\n<strong>conceptual<\/strong><br \/>\n pseudocode example of how this vulnerability might be exploited:<\/p>\n<pre><code class=\"\" data-line=\"\">\/\/ Construct malicious Word document\nWordDocument maliciousDoc = new WordDocument();\n\/\/ Create a buffer overflow in the document\nmaliciousDoc.addOverflowingBuffer();\n\/\/ Add arbitrary code to be executed upon overflow\nmaliciousDoc.addCode(&quot;...&quot;);\n\/\/ Send the document to the victim\nsendDocument(maliciousDoc, &quot;victim@example.com&quot;);<\/code><\/pre>\n<p>In this pseudocode, an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5909-critical-buffer-overflow-vulnerability-in-totolink-ex1200t\/\"  data-wpil-monitor-id=\"60656\">overflowing buffer<\/a> is added to a Word document. This overflowing buffer is specifically crafted to trigger the heap-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5902-critical-buffer-overflow-vulnerability-in-totolink-t10\/\"  data-wpil-monitor-id=\"60567\">buffer overflow vulnerability<\/a>. The document also includes arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47163-unauthorized-code-execution-through-microsoft-sharepoint-deserialization-vulnerability\/\"  data-wpil-monitor-id=\"60954\">code that will be executed<\/a> upon the overflow. The document is then sent to a potential victim.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>Users are strongly advised to apply the patch provided by <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30383-type-confusion-vulnerability-in-microsoft-office-excel-leading-to-unauthorized-code-execution\/\"  data-wpil-monitor-id=\"91848\">Microsoft<\/a> as soon as possible. Until the patch is applied, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5485-a-critical-vulnerability-pertaining-to-user-name-enumeration-in-web-management-interfaces\/\"  data-wpil-monitor-id=\"64839\">users can use a Web<\/a> Application Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary mitigation measure. Regularly updating and patching software is a crucial aspect of maintaining cybersecurity and should never be overlooked.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview CVE-2025-32717 is a significant vulnerability found in the widely used software Microsoft Office Word. This flaw allows an attacker to exploit a heap-based buffer overflow to execute code locally on the victim&#8217;s system. This vulnerability is of particular concern due to the prevalence of Microsoft Office Word in both personal and professional environments, making [&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":[86],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-53960","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-microsoft","attack_vector-buffer-overflow"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/53960","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=53960"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/53960\/revisions"}],"predecessor-version":[{"id":85026,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/53960\/revisions\/85026"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=53960"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=53960"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=53960"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=53960"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=53960"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=53960"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=53960"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=53960"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=53960"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}