{"id":62145,"date":"2025-08-08T10:25:50","date_gmt":"2025-08-08T10:25:50","guid":{"rendered":""},"modified":"2025-10-01T23:02:24","modified_gmt":"2025-10-02T05:02:24","slug":"cve-2025-47170-use-after-free-vulnerability-in-microsoft-office-word","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-47170-use-after-free-vulnerability-in-microsoft-office-word\/","title":{"rendered":"<strong>CVE-2025-47170: Use After Free Vulnerability in Microsoft Office Word<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity community is buzzing with discussions around a newly discovered vulnerability designated as CVE-2025-47170. This vulnerability, found in Microsoft Office Word, is of particular concern as it allows an unauthorized attacker to execute code locally, potentially leading to a system compromise or data leakage. Given the widespread usage of Microsoft Office Word, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46334-critical-vulnerability-in-git-gui-enables-potential-system-compromise\/\"  data-wpil-monitor-id=\"70760\">vulnerability has a vast potential<\/a> impact, affecting millions of users, businesses, and organizations worldwide.<br \/>\nThe gravity of this vulnerability is further underscored by its high CVSS (Common <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27614-a-high-risk-gitk-vulnerability-enabling-system-compromise\/\"  data-wpil-monitor-id=\"70482\">Vulnerability Scoring System<\/a>) score of 7.8, indicating it to be a major threat that requires prompt attention. In this blog post, we delve deeper into the inner workings of this vulnerability, its potential impacts, and how it can be mitigated.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-47170<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-2025-43192-critical-configuration-issue-in-macos-allowing-potential-system-compromise\/\"  data-wpil-monitor-id=\"71453\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-238801999\" 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-2025-47168-use-after-free-vulnerability-in-microsoft-office-word-allowing-unauthorized-code-execution\/\"  data-wpil-monitor-id=\"73071\">Microsoft Office Word<\/a> | All versions prior to the patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53770-critical-deserialization-vulnerability-in-microsoft-sharepoint-server\/\"  data-wpil-monitor-id=\"70532\">vulnerability lies in the handling of memory objects within Microsoft<\/a> Word. A <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48581-critical-security-flaw-allowing-local-privilege-escalation-in-mainline-installations\/\"  data-wpil-monitor-id=\"87137\">flaw in the programming allows<\/a> for the possibility of a &#8220;use after free&#8221; condition. This means that an attacker can manipulate an application to use memory after it has been freed or deleted, leading to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54416-arbitrary-command-execution-vulnerability-in-tj-actions-branch-names-github-action\/\"  data-wpil-monitor-id=\"70483\">arbitrary code execution<\/a>.<br \/>\nThe attacker would need to craft a malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53733-microsoft-office-word-numeric-type-conversion-vulnerability\/\"  data-wpil-monitor-id=\"81623\">Microsoft Word<\/a> document and get the user to open it. Upon opening the document, the malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50460-remote-code-execution-vulnerability-in-ms-swift-project\/\"  data-wpil-monitor-id=\"71452\">code embedded within it would execute<\/a>, potentially compromising the user&#8217;s system or leading to data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1611779192\" 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 is a conceptual example of how the vulnerability might be exploited. This pseudocode is meant to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49526-out-of-bounds-write-vulnerability-in-illustrator-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"75164\">illustrate the vulnerability<\/a>, not provide an actual exploit.<\/p>\n<pre><code class=\"\" data-line=\"\">\/\/ Craft malicious document\nmaliciousDoc = createWordDocument();\nembedMaliciousCode(maliciousDoc, &quot;...&quot;);\n\/\/ Send to victim\nsendToVictim(maliciousDoc, victimEmail);\n\/\/ Wait for victim to open document\nwaitForOpen(maliciousDoc);\n\/\/ Execute code upon document open\nexecuteCode(maliciousDoc);<\/code><\/pre>\n<p>This exploit hinges on the victim opening the malicious document. As such, it is crucial for users to be wary of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-58158-harness-open-source-git-lfs-server-vulnerability\/\"  data-wpil-monitor-id=\"85517\">opening documents from untrusted sources<\/a>. It&#8217;s also important for system administrators and cybersecurity personnel to apply the vendor patch as soon as possible to mitigate this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53024-high-risk-oracle-vm-virtualbox-vulnerability-allows-system-takeover\/\"  data-wpil-monitor-id=\"70759\">vulnerability<\/a>. If immediate patching is not possible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity community is buzzing with discussions around a newly discovered vulnerability designated as CVE-2025-47170. This vulnerability, found in Microsoft Office Word, is of particular concern as it allows an unauthorized attacker to execute code locally, potentially leading to a system compromise or data leakage. Given the widespread usage of Microsoft Office Word, this [&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":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-62145","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-microsoft","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/62145","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=62145"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/62145\/revisions"}],"predecessor-version":[{"id":79981,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/62145\/revisions\/79981"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=62145"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=62145"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=62145"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=62145"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=62145"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=62145"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=62145"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=62145"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=62145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}