{"id":79380,"date":"2025-09-30T17:03:33","date_gmt":"2025-09-30T17:03:33","guid":{"rendered":""},"modified":"2025-10-21T00:34:08","modified_gmt":"2025-10-21T06:34:08","slug":"cve-2025-10890-high-severity-side-channel-information-leakage-in-v8-of-google-chrome","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-10890-high-severity-side-channel-information-leakage-in-v8-of-google-chrome\/","title":{"rendered":"CVE-2025-10890: High Severity Side-Channel Information Leakage in V8 of Google Chrome<\/strong>"},"content":{"rendered":"

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

CVE-2025-10890 is a high severity vulnerability that exists in the V8 JavaScript engine of Google Chrome versions prior to 140.0.7339.207. This flaw allows an attacker to leak cross-origin data, providing them with potentially sensitive information which can be exploited for further attacks. The vulnerability is of particular concern to all Google Chrome<\/a> users, including individuals and organizations, due to its high severity rating and the widespread use of the browser.
\nThe discovery of this vulnerability highlights the constant vigilance required in the cybersecurity landscape, as even widely used and trusted platforms like Google Chrome can host critical vulnerabilities<\/a>. This vulnerability is considered highly critical because of the potential<\/a> for system compromise or data leakage, which can lead to significant losses and damages if exploited.<\/p>\n

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

CVE ID: CVE-2025-10890
\nSeverity: High (CVSS: 9.1)
\nAttack Vector: Remote
\nPrivileges Required: None
\nUser Interaction: Required
\nImpact: Potential system<\/a> compromise or data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Google Chrome<\/a> | Prior to 140.0.7339.207<\/p>\n

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

An attacker could exploit this vulnerability by creating a maliciously crafted HTML page<\/a>. When a victim visits this page, the flaw in V8 allows the attacker to leak cross-origin<\/a> data. Cross-origin data leakage refers to the exposure of information<\/a> from a different domain, potentially bypassing Same-Origin Policy (SOP) protections. This kind of attack can lead to unauthorized access<\/a> to sensitive information, leading to further attacks or data breaches.<\/p>\n

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

The following is a conceptual example of how a malicious HTML page might be constructed to exploit this vulnerability<\/a>:<\/p>\n

\n\n<script>\nvar malicious_payload = function() {\n\/\/ Code to exploit the vulnerability in V8 and leak cross-origin data\n};\nmalicious_payload();\n<\/script>\n<\/body>\n<\/html><\/code><\/pre>\n
Please note that the actual exploit code has been omitted to prevent misuse. This example is purely illustrative and is not a working exploit.<\/p>\n
Mitigation Measures<\/strong><\/p>\n
Users are advised to update their Google Chrome to the latest version to fix this vulnerability<\/a>. For organizations unable to immediately update Chrome, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. These solutions can detect and block attempts to exploit vulnerabilities<\/a>, providing an extra layer of security. However, they should not be the sole defense mechanism, and updating the affected software should always be the priority.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-10890 is a high severity vulnerability that exists in the V8 JavaScript engine of Google Chrome versions prior to 140.0.7339.207. This flaw allows an attacker to leak cross-origin data, providing them with potentially sensitive information which can be exploited for further attacks. The vulnerability is of particular concern to all Google Chrome users, including […]<\/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-79380","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