CVE-2025-10890 is a critical-severity vulnerability affecting Google Chrome, with a CVSS score of 9.1. This vulnerability allows attackers to exploit side-channel information leakage in the V8 JavaScript engine, leading to the potential leakage of cross-origin data. The vulnerability is classified under CWE-1300 and CWE-203, indicating issues related to improper handling of information and exposure of sensitive data.
The vulnerability was published on September 24, 2025, and affects versions of Google Chrome prior to 140.0.7339.207. Given the nature of this vulnerability, organizations using affected versions of Chrome should prioritize updating their browsers immediately to mitigate risks.
Risk to organizations includes potential exposure of sensitive user data through crafted HTML pages. Although there is no known exploit publicly available, the critical nature of the vulnerability necessitates immediate attention from security teams.
Organizations should prioritize patching immediately to protect against this vulnerability. Regular monitoring and updates for all software components are advisable to maintain security.
Vulnerability Details
CVE-2025-10890 describes a side-channel information leakage vulnerability in V8 in Google Chrome versions prior to 140.0.7339.207. This vulnerability is classified as critical due to its potential impact on confidentiality and integrity, with a CVSS score of 9.1 indicating a high severity level.
The root cause of the vulnerability lies in the improper handling of cross-origin data, which can be exploited through specially crafted HTML pages. The attack vector is network-based, requiring no user interaction or privileges to execute.
This vulnerability is categorized under multiple CWEs, including CWE-1300 and CWE-203, further emphasizing the importance of secure coding practices in the development lifecycle.
Technical Analysis
The exploitation of CVE-2025-10890 involves a network-based attack vector, characterized by low attack complexity. No privileges are required, nor is user interaction necessary for successful exploitation. The scope remains unchanged, meaning the attack's effect does not propagate beyond the initial target.
The vulnerability impacts confidentiality and integrity significantly, allowing attackers to leak sensitive cross-origin data. However, it does not affect availability. Given these factors, the potential for widespread impact exists, especially in environments where sensitive data is handled.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2025-10890 is considerable, as it can lead to the unauthorized disclosure of sensitive information through cross-origin data leakage. This vulnerability poses a significant threat to organizations that rely on Google Chrome for web access, especially those handling sensitive user data.
Organizations should treat this vulnerability with urgency, given its high CVSS score and potential impact on data confidentiality and integrity. The urgency is classified as critical, necessitating immediate patching to prevent possible exploitation.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of Google Chrome prior to 140.0.7339.207 are affected by this vulnerability. Organizations should ensure that they are using the latest version of Chrome to mitigate the risks associated with this security flaw.
Mitigation & Remediation
Google has released an update addressing this vulnerability. Organizations should update their Chrome installations to version 140.0.7339.207 or later. If immediate patching is not possible, consider implementing network segmentation to limit exposure and monitor for any suspicious activity.
For further details on the update, organizations can refer to the official release notes on the Google Chrome Releases blog.
Penetration testing can also be beneficial in identifying similar vulnerabilities.
Detection Guidance
Organizations should monitor logs for any unusual access patterns that may indicate attempts to exploit this vulnerability. Additionally, network signatures that highlight unauthorized data leaks should be established.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-10890 highlights the need for organizations to maintain a proactive approach to security. As vulnerabilities like this emerge, they represent broader trends in web application security, particularly concerning cross-origin data handling.
Security teams should take this as a reminder to regularly review their security policies and ensure adherence to secure coding standards.
For more information on best practices and security testing, refer to the following resources:
Penetration testing methodology and vulnerability management program design are essential components of a robust security strategy.
Cloud penetration testing can also help identify vulnerabilities in cloud environments.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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