{"id":59544,"date":"2025-07-21T18:25:53","date_gmt":"2025-07-21T18:25:53","guid":{"rendered":""},"modified":"2025-09-14T11:37:53","modified_gmt":"2025-09-14T17:37:53","slug":"cve-2025-7656-remote-exploitation-of-heap-corruption-in-google-chrome-through-integer-overflow","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-7656-remote-exploitation-of-heap-corruption-in-google-chrome-through-integer-overflow\/","title":{"rendered":"<strong>CVE-2025-7656: Remote Exploitation of Heap Corruption in Google Chrome through Integer Overflow<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>This blog post will take an in-depth look at the critical vulnerability identified as CVE-2025-7656. This security flaw has significant implications for users of Google Chrome, one of the most widely used internet browsers globally. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8159-critical-remote-buffer-overflow-vulnerability-in-d-link-dir-513-1-0\/\"  data-wpil-monitor-id=\"67405\">vulnerability pertains to an integer overflow<\/a> in V8, a fundamental part of Google Chrome that executes JavaScript. It <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41666-watchdog-file-replacement-vulnerability-allowing-remote-access-and-control\/\"  data-wpil-monitor-id=\"67407\">allows a remote<\/a> attacker to potentially exploit heap corruption via a specially crafted HTML page. The severity of this issue is high due to its <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31278-memory-corruption-vulnerability-with-potential-system-compromise\/\"  data-wpil-monitor-id=\"70490\">potential to lead to system<\/a> compromise or data leakage, highlighting the urgency for users to understand and address it.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-7656<br \/>\nSeverity: High &#8211; CVSS Score 8.8<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27055-memory-corruption-leads-to-potential-system-compromise-during-image-encoding\/\"  data-wpil-monitor-id=\"74227\">System compromise<\/a> or data leakage upon successful exploit<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1406561566\" 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-2025-8011-high-severity-heap-corruption-vulnerability-in-google-chrome-v8\/\"  data-wpil-monitor-id=\"75608\">Google Chrome<\/a> | Prior to 138.0.7204.157<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49672-buffer-overflow-vulnerability-in-windows-routing-and-remote-access-service\/\"  data-wpil-monitor-id=\"67792\">vulnerability stems from an integer overflow<\/a> in Google Chrome&#8217;s V8 engine. An <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30404-integer-overflow-vulnerability-in-executorch-resulting-in-potential-system-compromise\/\"  data-wpil-monitor-id=\"75964\">integer overflow<\/a> occurs when an arithmetic operation attempts to create a numeric value that is outside of the range that can be represented with a given number of bits. In this case, the overflow results in heap corruption, a type of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53964-critical-file-manipulation-vulnerability-in-goldendict\/\"  data-wpil-monitor-id=\"67406\">vulnerability that could allow an attacker to manipulate<\/a> and control data in the application&#8217;s memory.<br \/>\nThe threat actor can exploit this vulnerability by creating a malicious HTML page that triggers the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7945-critical-buffer-overflow-vulnerability-in-d-link-dir-513\/\"  data-wpil-monitor-id=\"67929\">integer<\/a> overflow. When a victim visits this page using a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46198-cross-site-scripting-vulnerability-in-grav-versions-1-7-46-to-1-7-48\/\"  data-wpil-monitor-id=\"69930\">vulnerable version<\/a> of Google Chrome, the attacker could potentially execute arbitrary code, leading to system compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1421107492\" 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<pre><code class=\"\" data-line=\"\">&lt;!DOCTYPE html&gt;\n&lt;html&gt;\n&lt;body&gt;\n&lt;script type=&quot;text\/javascript&quot;&gt;\n\/\/ Crafted JavaScript code that triggers integer overflow in V8\nvar arr = new Array(1);\narr.length = Math.pow(2, 31); \/\/ This will cause integer overflow in V8\narr.push(&#039;trigger heap corruption&#039;); \/\/ Heap corruption due to overflow\n&lt;\/script&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;<\/code><\/pre>\n<p>This conceptual example illustrates a simple JavaScript code that could cause an integer <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-33077-local-stack-based-buffer-overflow-vulnerability-in-ibm-engineering-systems-design-rhapsody\/\"  data-wpil-monitor-id=\"69931\">overflow in the V8 engine<\/a>, leading to heap corruption. Note that actual exploitation would involve more complex manipulations of the memory layout to achieve arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50460-remote-code-execution-vulnerability-in-ms-swift-project\/\"  data-wpil-monitor-id=\"71485\">code execution<\/a>.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>To protect against this vulnerability, users should immediately update their <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8578-critical-google-chrome-vulnerability-in-cast-feature\/\"  data-wpil-monitor-id=\"82292\">Google Chrome<\/a> browser to version 138.0.7204.157 or later, which contains a patch for this issue. For those who cannot immediately apply the patch, using a web application firewall (WAF) or intrusion detection system (IDS) can serve as temporary mitigation, as these systems could be configured to detect and block attempts to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27614-a-high-risk-gitk-vulnerability-enabling-system-compromise\/\"  data-wpil-monitor-id=\"70489\">exploit<\/a> this vulnerability. Regularly updating and patching <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5243-critical-security-vulnerability-in-smg-software-information-portal\/\"  data-wpil-monitor-id=\"69932\">software is a critical<\/a> part of maintaining cybersecurity and preventing potential attacks.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview This blog post will take an in-depth look at the critical vulnerability identified as CVE-2025-7656. This security flaw has significant implications for users of Google Chrome, one of the most widely used internet browsers globally. The vulnerability pertains to an integer overflow in V8, a fundamental part of Google Chrome that executes JavaScript. It [&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":[91],"product":[],"attack_vector":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59544","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-google","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59544","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=59544"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59544\/revisions"}],"predecessor-version":[{"id":74805,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59544\/revisions\/74805"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=59544"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=59544"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=59544"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=59544"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=59544"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=59544"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=59544"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=59544"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=59544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}