{"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":"CVE-2025-6191: High Severity Integer Overflow Vulnerability in Google Chrome’s V8 Engine<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The CVE-2025-6191 vulnerability is a serious security defect found in Google Chrome’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’s a 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 vulnerability could potentially impact millions of users<\/a> worldwide, posing significant risks of system compromise or data leakage.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-6191
\nSeverity: High (CVSS score 8.8)
\nAttack Vector: Remote
\nPrivileges Required: None
\nUser Interaction: Required
\nImpact: Potential system<\/a> compromise and data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Google Chrome | Versions prior<\/a> to 137.0.7151.119<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The exploit takes advantage of an integer overflow vulnerability<\/a> in Google Chrome’s V8 JavaScript engine. An attacker can create a malicious HTML page that, when loaded and 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 execute arbitrary code<\/a> or expose sensitive information from the system’s memory.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

The following is a conceptual example, in JavaScript, of how this vulnerability might be exploited:<\/p>\n

\/\/ 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 < 0x100000000; i++) {\nuint32[i] = i;\n}\n\/\/ The overflow leads to out-of-bounds access\nlet oob_access = uint32[0x100000000];<\/code><\/pre>\n
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
Mitigation Guidance<\/strong><\/p>\n
Users are strongly advised to update their Google Chrome version to 137.0.7151.119 or later, which contains the necessary 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 potential exploit<\/a> attempts.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The CVE-2025-6191 vulnerability is a serious security defect found in Google Chrome’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’s a critical concern as it allows a remote attacker to potentially perform out of bounds memory access through […]<\/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,"_monsterinsights_skip_tracking":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":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t