{"id":55135,"date":"2025-06-25T20:54:38","date_gmt":"2025-06-25T20:54:38","guid":{"rendered":""},"modified":"2025-09-07T11:38:35","modified_gmt":"2025-09-07T17:38:35","slug":"cve-2025-6191-high-severity-integer-overflow-vulnerability-in-google-chrome-s-v8-engine","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6191-high-severity-integer-overflow-vulnerability-in-google-chrome-s-v8-engine\/","title":{"rendered":"<strong>CVE-2025-6191: High Severity Integer Overflow Vulnerability in Google Chrome&#8217;s V8 Engine<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The CVE-2025-6191 vulnerability is a serious security defect found in Google Chrome&#8217;s V8 engine. This flaw, which is rated high on the Chromium security severity scale, affects all versions of Google Chrome prior to 137.0.7151.119. It&#8217;s a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6151-critical-remote-buffer-overflow-vulnerability-in-tp-link-tl-wr940n\/\"  data-wpil-monitor-id=\"62116\">critical concern as it allows a remote<\/a> attacker to potentially perform out of bounds memory access through a specifically crafted HTML page. Given the widespread use of Google Chrome, this <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=\"61591\">vulnerability could potentially impact millions of users<\/a> worldwide, posing significant risks of system compromise or data leakage.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6191<br \/>\nSeverity: High (CVSS score 8.8)<br \/>\nAttack Vector: Remote<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6510-critical-vulnerability-in-netgear-ex6100-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"63690\">Potential system<\/a> compromise and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2389176299\" 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>Google Chrome | <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49137-critical-vulnerability-in-hax-cms-php-prior-to-version-11-0-0\/\"  data-wpil-monitor-id=\"61968\">Versions prior<\/a> to 137.0.7151.119<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of an integer <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6098-critical-buffer-overflow-vulnerability-in-utt-in-u-750w\/\"  data-wpil-monitor-id=\"61472\">overflow vulnerability<\/a> in Google Chrome&#8217;s V8 JavaScript engine. An attacker can create a malicious HTML page that, when loaded and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47164-code-execution-vulnerability-in-microsoft-office-via-use-after-free-error\/\"  data-wpil-monitor-id=\"61854\">executed in a vulnerable<\/a> version of Google Chrome, can trigger an out-of-bounds memory access. This access could potentially allow an attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47953-code-execution-vulnerability-in-microsoft-office\/\"  data-wpil-monitor-id=\"61863\">execute arbitrary code<\/a> or expose sensitive information from the system&#8217;s memory.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2865099645\" 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>The following is a conceptual example, in JavaScript, of how this vulnerability might be exploited:<\/p>\n<pre><code class=\"\" data-line=\"\">\/\/ Hypothetical malicious JavaScript code exploiting CVE-2025-6191\nlet buf = new ArrayBuffer(0x100);\nlet uint32 = new Uint32Array(buf);\n\/\/ Trigger integer overflow\nfor (let i = 0; i &lt; 0x100000000; i++) {\nuint32[i] = i;\n}\n\/\/ The overflow leads to out-of-bounds access\nlet oob_access = uint32[0x100000000];<\/code><\/pre>\n<p>Please note that this is a conceptual example and may not directly work in a real-world scenario. It is provided for educational purposes only to understand the nature of the exploit.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>Users are strongly advised to update their Google Chrome version to 137.0.7151.119 or later, which contains the necessary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-28389-critical-security-vulnerability-in-openc3-cosmos-v6-0-0-due-to-weak-password-requirements\/\"  data-wpil-monitor-id=\"61590\">security patches to address this vulnerability<\/a>. If immediate update is not possible, the use of a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as temporary mitigation, helping to detect and prevent <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-7457-macos-authorization-model-exploit-leading-to-potential-mitm-attacks\/\"  data-wpil-monitor-id=\"80044\">potential exploit<\/a> attempts.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The CVE-2025-6191 vulnerability is a serious security defect found in Google Chrome&#8217;s V8 engine. This flaw, which is rated high on the Chromium security severity scale, affects all versions of Google Chrome prior to 137.0.7151.119. It&#8217;s a critical concern as it allows a remote attacker to potentially perform out of bounds memory access through [&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":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-55135","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-google"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/55135","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=55135"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/55135\/revisions"}],"predecessor-version":[{"id":72461,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/55135\/revisions\/72461"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=55135"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=55135"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=55135"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=55135"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=55135"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=55135"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=55135"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=55135"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=55135"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}